• ### Basic Electricity - Resistance and Ohm's law

A tutorial on the basics of resistance, resistors, and Ohm's law which describes the relationship between voltage, current and resistance. I also show you how to build a simple resistor + LED circuit. 300 LEDs for \$13: http://www.amazon.com/exec/obidos/ASIN/B00UWBJM0Q/afromods-20 500 resistors for \$12: http://www.amazon.com/exec/obidos/ASIN/B008MH97I4/afromods-20 9V battery clips: http://www.amazon.com/exec/obidos/ASIN/B0188X6C2U/afromods-20 Adjustable power supply: http://www.amazon.com/exec/obidos/ASIN/B006W209ZG/afromods-20 Previous video on LEDs: http://www.youtube.com/watch?v=Yo6JI_bzUzo Next video on power and watts: http://www.youtube.com/watch?v=VSpB3HivkhY Website: http://www.afrotechmods.com Twitter: http://twitter.com/afrotechmods Facebook: http://bit.ly/2cMrAeu Ohmnilabs: htt...

published: 07 Nov 2016
• ### Intro to Electrical Resistance, Resistors, and Resistivity | Doc Physics

Here, I'll introduce how resistance is an electrical friction, in that it takes useful energy and converts it to heat. Resistivity is related to conductance and conductivity, too. See how judgmental I can be?

published: 14 Jan 2013
• ### What is electric resistance

A simple description of electric resistance, how the electricity is affected and how the resistance determines the heat output of electric heating elements

published: 10 Dec 2012
• ### Electrical Resistance - Iken Edu

This interactive animation describes about the electrical resistance, factors affecting resistance of wire. It also describes about the length of the wire, thickness of the wire, material of the wire and the temperature of the wire. This is a product of Mexus Education Pvt. Ltd., an education innovations company based in Mumbai, India. http://www.mexuseducation.com, http://www.ikenstore.in For more videos visit https://www.youtube.com/ikenedu Follow us on twitter https://twitter.com/ikenedu Like us on https://www.facebook.com/ikenconnect

published: 28 Mar 2016
• ### Electrical Resistance

We have explained here what is resistance and what is the basic theory behind it.

published: 03 Sep 2016
• ### GCSE Physics Revision Understanding Resistance

In this video we start looking at resistance, which we're going to explore in later videos. We look at what causes resistance and how to calculate it. Don't panic if maths is not your subject, I've included a triangle to help you.

published: 15 Dec 2014
• ### Electrical Resistance - Georg Ohm

Georg Simon Ohm (16 March 1789 -- 6 July 1854) was a German physicist and mathematician. As a high school teacher, Ohm began his research with the new electrochemical cell, invented by Italian scientist Alessandro Volta. Using equipment of his own creation, Ohm found that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm's law.

published: 01 May 2013
• ### Resistivity and conductivity | Circuits | Physics | Khan Academy

Let's look at the properties of materials that cause a resistor to resist the flow of current. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/voltmeters-and-ammeters?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/analyzing-a-resistor-circuit-with-two-batteries?utm_source=YT&utm_medium=Desc&utm_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out o...

published: 22 Sep 2014
• ### Factors affecting resistance

This video screencast was created with Doceri on an iPad. Doceri is free in the iTunes app store. Learn more at http://www.doceri.com

published: 26 Feb 2014
• ### Electrical Resistance

Useful for CBSE, ICSE, NCERT & International Students Grade : 10 Subject :Physics Lesson :Electricity, Heating and chemical effect of current Topic: Electrical Resistance Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. Theresistance is measured in units of ohms (Ω). If we make an analogy to water flow in pipes, the resistance is bigger when the pipe is thinner, so the water flow is decreased. Visit www.oztern.com to find personalized test preparation solutions for Pre Medical - AIPMT, AIIMS, JIPMER, State, Pre Engineering - IIT JEE, JEE MAIN, BITSAT, State and Foundations - Class 6 to 10.

published: 25 Nov 2015
• ### Lowering Electrical Resistance with Liquid Nitrogen

The electrical resistance of a copper coil is dramatically decreased by cooling with liquid nitrogen.

published: 29 May 2009
• ### What is electrical resistance?

Trying to explain resistance!

published: 30 Apr 2015
• ### Class 10 Science - Physics - Ohm's law & Electrical resistance

Have any doubts? Follow this link http://avanti.in/peerlearning/signup and ask from the experts. It’s free. Class 10 Physics – Electricity Electricity is everywhere around us. We use so many appliances in our daily lives which are driven by electricity. How a fan starts working when you switch it on, the lights turn on when you switch them on. You all know that this is electricity which is making all this happen. But what is electricity? How it travels in the wires? What is the constituent of this electricity? All these questions will be answered in this chapter. Here, we’ll learn 1. What are charges? 2. What is electric potential and electric current? 3. Ohm’s law experiment. 4. What is ohm’s law and what is a resistance? 5. What is resistivity and how it changes with temperature? 6. Comb...

published: 21 Jul 2016
• ### Voltage, Current and Resistance

Mr. Andersen describes the relationship between voltage, current and resistance in an electric circuit. Ohm's Law is introduced through a circuit simulation. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License

published: 16 May 2011
• ### XII_17.Resistance, Ohms Law(2013)

Physics, Class XII Chapter: Electrostatics Topic: Resistance and Ohms Law. Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.

published: 15 May 2013
• ### Introduction to circuits and Ohm's law | Circuits | Physics | Khan Academy

Introduction to electricity, circuits, current, and resistance. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/circuits-part-2?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/electric-charge-electric-force-and-voltage/electric-potential-voltage/v/electric-potential-at-a-point-in-space?utm_source=YT&utm_medium=Desc&utm_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need...

published: 24 May 2008
• ### How to Solve Any Series and Parallel Circuit Problem

How do you analyze a circuit with resistors in series and parallel configurations? With the Break It Down-Build It Up Method! http://www.jesseleemason.com Music by Millish - Download our music (that's me on the acoustic guitar) at the iTunes Store: https://itunes.apple.com/us/album/millish/id128839547 0:00 INTRO: In this video we solve a combination series and parallel resistive circuit problem for the voltage across, current through and power dissipated by the circuit's resistors. 1:32 BREAK IT DOWN: We redraw the circuit in linear form to more easily identify series and parallel relationships. Then we combine resistors using equivalent resistance equations. After redrawing several times we end up with a single resistor representing the equivalent resistance of the circuit. We then ...

published: 31 Mar 2015
• ### Class 6-10 - Electricity and Resistance

What comes to mind when you think of electricity? Current, voltage and resistance. What affects the resistance? What makes a conductor be what it is and for that matter, how is it different from an insulator? What happens when the kinetic energy of electrons is gone? Learn about electricity and resistance in a very interesting way through this module. Electricity can be defined as the movement of charged electrons or the charged protons, dynamically as a current. The charged electrons create charge, which are bind together to do work. The electric bulb, fan and other electronic equipment’s work by binding the electrons. Electricity is measured in units of power called as Watts and it is denoted by the letter W. Current can be defined as the rate at which the charge is flowing. An elec...

published: 25 Jul 2015
• ### Ohm's law and resistance explained in HINDI | हिंदी | EduPoint

This video in HINDI is explaining Ohm's law and resistance for class 9, 10, 12, IIT-JEE. Ohm's law states that the current flowing through a conductor is directly proportional to the potential difference across its two ends, provided that the physical conditions ( temperature, mechanical strain, etc ) remain constant. ओम के सिद्धांत हिंदी में | Mathematically, V ∝ i or, V = R i where, R is constant of proportionality and is called electric resistance of the conductor. Other relevant topics : Electric current :- Electric current is defined as the rate of flow of electric charge through a conductor. In other words, it is defined as the amount of electric charge crossing through any cross-section of a conductor in unit time. So, electric current, i= q/t where, q is the...

published: 08 Jun 2016
• ### What is meant by electric resistance heat.

This one exposes the myth that more resistance to current flow creates more heat in the electric heating element. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome. If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.

published: 13 Jul 2016
• ### Electric Potential, Current, and Resistance

Whenever you plug something into an electrical socket, don't you wonder what's going on? Well you should, as it's pretty neat. What is electricity made of? How did we figure out how to harness this power? Let's take a look! Subscribe: http://bit.ly/ProfDaveSubscribe ProfessorDaveExplains@gmail.com https://www.patreon.com/professordaveexplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExplains http://twitter.com/DaveExplains General Chemistry - Online Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry - Online Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry - Online Tutorials: http://bit.ly/ProfDaveBiochem Science for Common Folk - Online Tutorials: http://bit.ly/ProfDaveScience4CommonFolk

published: 12 Apr 2017
• ### Electric Current: Crash Course Physics #28

So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course Physics, Shini talks to us about electric current, voltaic cells, and how we get electric charge. Get your own Crash Course Physics mug from DFTBA: http://store.dftba.com/products/crash... The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list... -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://ww...

published: 20 Oct 2016
• ### Electrical Resistance

Useful for CBSE, ICSE, NCERT & International Students Grade 07 Subject: SCIENCE Lesson : Electric Current and its Effects Topic: Electrical Resistance Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. Theresistance is measured in units of ohms (Ω). If we make an analogy to water flow in pipes, the resistance is bigger when the pipe is thinner, so the water flow is decreased Visit www.oztern.com to find personalized test preparation solutions for Pre Medical - AIPMT, AIIMS, JIPMER, State, Pre Engineering - IIT JEE, JEE MAIN, BITSAT, State and Foundations - Class 6 to 10.

published: 24 Dec 2015
• ### Measuring Resistance with a Digital Multimeter

Basic introduction to using a digital multimeter to measure resistance of a resistor. Includes a quick quiz question at the end.

published: 22 May 2014
• ### Electrical Resistivity

Electrical Resistivity

published: 13 May 2013
• ### Electrical Resistance

published: 31 Mar 2013
• ### Electrical resistance and conductance

published: 09 Dec 2015
• ### Electrical resistance tomography

published: 28 Jul 2016
• ### Electrical resistive heating

published: 12 Apr 2017

## Basic Electricity - Resistance and Ohm's law

• Order:
• Duration: 9:10
• Updated: 07 Nov 2016
• views: 199674
videos
A tutorial on the basics of resistance, resistors, and Ohm's law which describes the relationship between voltage, current and resistance. I also show you how to build a simple resistor + LED circuit. 300 LEDs for \$13: http://www.amazon.com/exec/obidos/ASIN/B00UWBJM0Q/afromods-20 500 resistors for \$12: http://www.amazon.com/exec/obidos/ASIN/B008MH97I4/afromods-20 9V battery clips: http://www.amazon.com/exec/obidos/ASIN/B0188X6C2U/afromods-20 Adjustable power supply: http://www.amazon.com/exec/obidos/ASIN/B006W209ZG/afromods-20 Previous video on LEDs: http://www.youtube.com/watch?v=Yo6JI_bzUzo Next video on power and watts: http://www.youtube.com/watch?v=VSpB3HivkhY Website: http://www.afrotechmods.com Twitter: http://twitter.com/afrotechmods Facebook: http://bit.ly/2cMrAeu Ohmnilabs: http://www.ohmnilabs.com
https://wn.com/Basic_Electricity_Resistance_And_Ohm's_Law

## Intro to Electrical Resistance, Resistors, and Resistivity | Doc Physics

• Order:
• Duration: 13:14
• Updated: 14 Jan 2013
• views: 50387
videos
Here, I'll introduce how resistance is an electrical friction, in that it takes useful energy and converts it to heat. Resistivity is related to conductance and conductivity, too. See how judgmental I can be?
https://wn.com/Intro_To_Electrical_Resistance,_Resistors,_And_Resistivity_|_Doc_Physics

## What is electric resistance

• Order:
• Duration: 6:16
• Updated: 10 Dec 2012
• views: 44883
videos
A simple description of electric resistance, how the electricity is affected and how the resistance determines the heat output of electric heating elements
https://wn.com/What_Is_Electric_Resistance

## Electrical Resistance - Iken Edu

• Order:
• Duration: 5:39
• Updated: 28 Mar 2016
• views: 6700
videos
This interactive animation describes about the electrical resistance, factors affecting resistance of wire. It also describes about the length of the wire, thickness of the wire, material of the wire and the temperature of the wire. This is a product of Mexus Education Pvt. Ltd., an education innovations company based in Mumbai, India. http://www.mexuseducation.com, http://www.ikenstore.in For more videos visit https://www.youtube.com/ikenedu Follow us on twitter https://twitter.com/ikenedu Like us on https://www.facebook.com/ikenconnect
https://wn.com/Electrical_Resistance_Iken_Edu

## Electrical Resistance

• Order:
• Duration: 2:11
• Updated: 03 Sep 2016
• views: 4159
videos
We have explained here what is resistance and what is the basic theory behind it.
https://wn.com/Electrical_Resistance

## GCSE Physics Revision Understanding Resistance

• Order:
• Duration: 4:00
• Updated: 15 Dec 2014
• views: 72220
videos
In this video we start looking at resistance, which we're going to explore in later videos. We look at what causes resistance and how to calculate it. Don't panic if maths is not your subject, I've included a triangle to help you.
https://wn.com/Gcse_Physics_Revision_Understanding_Resistance

## Electrical Resistance - Georg Ohm

• Order:
• Duration: 14:33
• Updated: 01 May 2013
• views: 10839
videos
Georg Simon Ohm (16 March 1789 -- 6 July 1854) was a German physicist and mathematician. As a high school teacher, Ohm began his research with the new electrochemical cell, invented by Italian scientist Alessandro Volta. Using equipment of his own creation, Ohm found that there is a direct proportionality between the potential difference (voltage) applied across a conductor and the resultant electric current. This relationship is known as Ohm's law.
https://wn.com/Electrical_Resistance_Georg_Ohm

## Resistivity and conductivity | Circuits | Physics | Khan Academy

• Order:
• Duration: 12:02
• Updated: 22 Sep 2014
• views: 121312
videos
Let's look at the properties of materials that cause a resistor to resist the flow of current. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/voltmeters-and-ammeters?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/circuits-topic/circuits-resistance/v/analyzing-a-resistor-circuit-with-two-batteries?utm_source=YT&utm_medium=Desc&utm_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Physics channel: https://www.youtube.com/channel/UC0oGarQW2lE5PxhGoQAKV7Q?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy

## Factors affecting resistance

• Order:
• Duration: 5:22
• Updated: 26 Feb 2014
• views: 16542
videos
This video screencast was created with Doceri on an iPad. Doceri is free in the iTunes app store. Learn more at http://www.doceri.com
https://wn.com/Factors_Affecting_Resistance

## Electrical Resistance

• Order:
• Duration: 3:11
• Updated: 25 Nov 2015
• views: 1051
videos
Useful for CBSE, ICSE, NCERT & International Students Grade : 10 Subject :Physics Lesson :Electricity, Heating and chemical effect of current Topic: Electrical Resistance Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. Theresistance is measured in units of ohms (Ω). If we make an analogy to water flow in pipes, the resistance is bigger when the pipe is thinner, so the water flow is decreased. Visit www.oztern.com to find personalized test preparation solutions for Pre Medical - AIPMT, AIIMS, JIPMER, State, Pre Engineering - IIT JEE, JEE MAIN, BITSAT, State and Foundations - Class 6 to 10.
https://wn.com/Electrical_Resistance

## Lowering Electrical Resistance with Liquid Nitrogen

• Order:
• Duration: 1:35
• Updated: 29 May 2009
• views: 49551
videos
The electrical resistance of a copper coil is dramatically decreased by cooling with liquid nitrogen.
https://wn.com/Lowering_Electrical_Resistance_With_Liquid_Nitrogen

## What is electrical resistance?

• Order:
• Duration: 2:42
• Updated: 30 Apr 2015
• views: 3293
videos
Trying to explain resistance!
https://wn.com/What_Is_Electrical_Resistance

## Class 10 Science - Physics - Ohm's law & Electrical resistance

• Order:
• Duration: 3:44
• Updated: 21 Jul 2016
• views: 97842
videos
Have any doubts? Follow this link http://avanti.in/peerlearning/signup and ask from the experts. It’s free. Class 10 Physics – Electricity Electricity is everywhere around us. We use so many appliances in our daily lives which are driven by electricity. How a fan starts working when you switch it on, the lights turn on when you switch them on. You all know that this is electricity which is making all this happen. But what is electricity? How it travels in the wires? What is the constituent of this electricity? All these questions will be answered in this chapter. Here, we’ll learn 1. What are charges? 2. What is electric potential and electric current? 3. Ohm’s law experiment. 4. What is ohm’s law and what is a resistance? 5. What is resistivity and how it changes with temperature? 6. Combinations of resistors. 7. What are ammeter and voltmeter and what are their uses in the circuit? 8. Heating effect of current. AvantiEd- Learn more about us at http://www.avanti.in Like us on Facebook @ https://www.facebook.com/avantilearningcentres/?fref=ts Follow us on Twitter @ https://twitter.com/AvantiLC For more information, please visit www.avanti.in For more information, please visit www.avanti.in
https://wn.com/Class_10_Science_Physics_Ohm's_Law_Electrical_Resistance

## Voltage, Current and Resistance

• Order:
• Duration: 9:47
• Updated: 16 May 2011
• views: 604201
videos
Mr. Andersen describes the relationship between voltage, current and resistance in an electric circuit. Ohm's Law is introduced through a circuit simulation. Intro Music Atribution Title: I4dsong_loop_main.wav Artist: CosmicD Link to sound: http://www.freesound.org/people/CosmicD/sounds/72556/ Creative Commons Atribution License
https://wn.com/Voltage,_Current_And_Resistance

## XII_17.Resistance, Ohms Law(2013)

• Order:
• Duration: 1:55:00
• Updated: 15 May 2013
• views: 21438
videos
Physics, Class XII Chapter: Electrostatics Topic: Resistance and Ohms Law. Classroom lecture by Pradeep Kshetrapal. Language : English mixed with Hindi.
https://wn.com/Xii_17.Resistance,_Ohms_Law(2013)

## Introduction to circuits and Ohm's law | Circuits | Physics | Khan Academy

• Order:
• Duration: 11:40
• Updated: 24 May 2008
• views: 1184617
videos

## How to Solve Any Series and Parallel Circuit Problem

• Order:
• Duration: 14:06
• Updated: 31 Mar 2015
• views: 765132
videos
How do you analyze a circuit with resistors in series and parallel configurations? With the Break It Down-Build It Up Method! http://www.jesseleemason.com Music by Millish - Download our music (that's me on the acoustic guitar) at the iTunes Store: https://itunes.apple.com/us/album/millish/id128839547 0:00 INTRO: In this video we solve a combination series and parallel resistive circuit problem for the voltage across, current through and power dissipated by the circuit's resistors. 1:32 BREAK IT DOWN: We redraw the circuit in linear form to more easily identify series and parallel relationships. Then we combine resistors using equivalent resistance equations. After redrawing several times we end up with a single resistor representing the equivalent resistance of the circuit. We then apply Ohm's Law to this simple (or rather simplified) circuit and determine the circuit current (I-0 in the video). 7:36 BUILD IT UP: Retracing our redraws, we determine the voltage across and current through each resistor in the circuit using Ohm's Law. 12:51 POWER: After tabulating our solutions we determine the power dissipated by each resistor.
https://wn.com/How_To_Solve_Any_Series_And_Parallel_Circuit_Problem

## Class 6-10 - Electricity and Resistance

• Order:
• Duration: 3:14
• Updated: 25 Jul 2015
• views: 49401
videos
What comes to mind when you think of electricity? Current, voltage and resistance. What affects the resistance? What makes a conductor be what it is and for that matter, how is it different from an insulator? What happens when the kinetic energy of electrons is gone? Learn about electricity and resistance in a very interesting way through this module. Electricity can be defined as the movement of charged electrons or the charged protons, dynamically as a current. The charged electrons create charge, which are bind together to do work. The electric bulb, fan and other electronic equipment’s work by binding the electrons. Electricity is measured in units of power called as Watts and it is denoted by the letter W. Current can be defined as the rate at which the charge is flowing. An electric current can be measured using a device called as ammeter and the SI unit for measuring an electric current is the ampere. Voltage can be defined as the difference in charges between the two points. It can be measured by direct current (DC) and alternating current devices. Resistance is the tendency of a material to resist the flow of current. There are several factors that affect the resistance. These includes the material of a wire, thickness of wire, length of a wire and temperature of a wire. The resistance of an electricity is measured in Siemens, which is denoted by the letter S and the S.I unit of resistance is ohms which is denoted by the Greek alphabet symbol Omega - Ω. The resistance of any substance can be calculated by the Laws of Resistance. The main difference conductor and insulator is in conductor electric current flows freely whereas in insulator electric current cannot flows freely. Our website- http://www.byjus.com/ Download our app on android- https://goo.gl/5Uz70E Download our app on an Apple device- https://goo.gl/2mLi1I
https://wn.com/Class_6_10_Electricity_And_Resistance

## Ohm's law and resistance explained in HINDI | हिंदी | EduPoint

• Order:
• Duration: 6:40
• Updated: 08 Jun 2016
• views: 106289
videos
This video in HINDI is explaining Ohm's law and resistance for class 9, 10, 12, IIT-JEE. Ohm's law states that the current flowing through a conductor is directly proportional to the potential difference across its two ends, provided that the physical conditions ( temperature, mechanical strain, etc ) remain constant. ओम के सिद्धांत हिंदी में | Mathematically, V ∝ i or, V = R i where, R is constant of proportionality and is called electric resistance of the conductor. Other relevant topics : Electric current :- Electric current is defined as the rate of flow of electric charge through a conductor. In other words, it is defined as the amount of electric charge crossing through any cross-section of a conductor in unit time. So, electric current, i= q/t where, q is the total charge flowing through any cross-section in time t. electric current is a scalar quantity. In S.I., its unit is ampere (A). 1 ampere = 1 coulomb second-1. Drift velocity :- The drift velocity is defined as the average velocity with which free electrons in a conductor get drifted under the influence of an external electric field applied across the conductor. It is a vector quantity. In S.I., its unit is ms^(-1). Electron mobility :- The electron mobility of a conductor is defined as the drift velocity acquired per unit strength of the electric field applied across the conductor. electron mobility, μ = v_d/E In S.I., its unit is m2 V-1s-1. Resistance of a conductor. Resistance of a conductor is defined as the ratio of the potential difference applied across the conductor to the current flowing through it. Mathematically, R = V/i In S.I., its unit is ohm (Ω). 1 ohm = 1 volt ampere-1. Resistivity of a material :- Resistivity or specific resistance of a material is defined as the resistance offered by a wire of that material of unit length and unit cross-sectional area. ρ = R A/l Conductance of a conductor :- The reciprocal of resistance of a conductor is called the conductance of that conductor. Conductance, G = 1/R In S.I., its unit is mho or ohm-1 (Ω-1) or siemen (S) 1 mho = 1/(1 ohm) Conductivity of a material :- The reciprocal of resistivity of a material is called the conductivity of that conductor. Conductivity, σ = 1/ρ In S.I., its unit is ohm-1 metre-1 (Ω-1 m-1) or mho metre-1 or seimen metre-1(S m-1) Thermistor :- A thermistor is a heat sensitive resistor whose resistance varies appreciably with change in temperature. Superconductivity :- The phenomenon, due to which a substance loses all signs of its resistance, when cooled to its critical temperature, is called superconductivity. e.g., at 4.2K mercury shows superconductivity. The substance, which offers superconductivity, are called superconductors. Series combination of resistors :- Two or more resistors are said to be in connected in series combination, if same current passes through each of them, when some potential difference is applied across the combination. If R_s is the resistance equivalent to the series combination, R_s = R_1+ R_2 + R_3 + .... Parallel combination of resistors :- Two or more resistors are said to be in connected in parallel combination, if same potential difference is applied across each of them. If R_p is the resistance equivalent to the parallel combination, 1/R_p = 1/R_1 + 1/R_2 + 1/R_3 Electromotive force :- The potential difference between the two poles of a cell in an open circuit is called electromotive force of the cell. It is denoted by E. In S.I., its unit is volt (V) or joule coulomb-1 ( J C-1 ). Internal resistance of a cell :- The resistance offered by the electrolyte of a cell, when current flows through it, is known as internal resistance of the cell. Terminal potential difference of a cell :- The potential difference between the two poles of a cell in a closed circuit is called terminal potential difference of the cell. Lost volt :- The potential drop in a cell due to the internal resistance of the cell is called the lost volt. Kirchhoff's laws :- Kirchhoff's first law (junction rule) :- It states that the algebraic sum of the currents meeting at a point in an electric circuit is always zero. Kirchhoff's first law (loop rule) :- it states that in any part of an electric circuit, the algebraic sum of the e.m.f.s is equal to the algebraic sum of the products of the resistances and currents flowing through them. Click to visit the homepage of our channel : https://www.youtube.com/channel/UCG1-22fo1sIhXGuXYpTRqaA EduPoint, Dam Road, Chandil, Dist- Seraikela-Kharsawan, Jharkhand, India.
https://wn.com/Ohm's_Law_And_Resistance_Explained_In_Hindi_|_हिंदी_|_Edupoint

## What is meant by electric resistance heat.

• Order:
• Duration: 3:07
• Updated: 13 Jul 2016
• views: 5891
videos
This one exposes the myth that more resistance to current flow creates more heat in the electric heating element. This video is part of the heating and cooling series of training videos made to accompany my websites: www.graycoolingman.com and www.grayfurnaceman.com to pass on what I have learned in many years of service and repair. If you have suggestions or comments they are welcome. If you are a homeowner looking to repair your own appliance, understand that the voltages can be lethal, the fuels are highly flammable and high pressures are used. Know your limits.
https://wn.com/What_Is_Meant_By_Electric_Resistance_Heat.

## Electric Potential, Current, and Resistance

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• Duration: 5:25
• Updated: 12 Apr 2017
• views: 1848
videos
Whenever you plug something into an electrical socket, don't you wonder what's going on? Well you should, as it's pretty neat. What is electricity made of? How did we figure out how to harness this power? Let's take a look! Subscribe: http://bit.ly/ProfDaveSubscribe ProfessorDaveExplains@gmail.com https://www.patreon.com/professordaveexplains http://professordaveexplains.com http://facebook.com/ProfessorDaveExplains http://twitter.com/DaveExplains General Chemistry - Online Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry - Online Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry - Online Tutorials: http://bit.ly/ProfDaveBiochem Science for Common Folk - Online Tutorials: http://bit.ly/ProfDaveScience4CommonFolk
https://wn.com/Electric_Potential,_Current,_And_Resistance

## Electric Current: Crash Course Physics #28

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• Duration: 8:23
• Updated: 20 Oct 2016
• views: 166933
videos
So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course Physics, Shini talks to us about electric current, voltaic cells, and how we get electric charge. Get your own Crash Course Physics mug from DFTBA: http://store.dftba.com/products/crash... The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list... -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
https://wn.com/Electric_Current_Crash_Course_Physics_28

## Electrical Resistance

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• Duration: 2:30
• Updated: 24 Dec 2015
• views: 531
videos
Useful for CBSE, ICSE, NCERT & International Students Grade 07 Subject: SCIENCE Lesson : Electric Current and its Effects Topic: Electrical Resistance Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. Theresistance is measured in units of ohms (Ω). If we make an analogy to water flow in pipes, the resistance is bigger when the pipe is thinner, so the water flow is decreased Visit www.oztern.com to find personalized test preparation solutions for Pre Medical - AIPMT, AIIMS, JIPMER, State, Pre Engineering - IIT JEE, JEE MAIN, BITSAT, State and Foundations - Class 6 to 10.
https://wn.com/Electrical_Resistance

## Measuring Resistance with a Digital Multimeter

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• Duration: 4:23
• Updated: 22 May 2014
• views: 66104
videos
Basic introduction to using a digital multimeter to measure resistance of a resistor. Includes a quick quiz question at the end.
https://wn.com/Measuring_Resistance_With_A_Digital_Multimeter

## Electrical Resistivity

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• Duration: 6:12
• Updated: 13 May 2013
• views: 2659
videos
Electrical Resistivity
https://wn.com/Electrical_Resistivity

## Electrical Resistance

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• Duration: 12:15
• Updated: 31 Mar 2013
• views: 154
videos
https://wn.com/Electrical_Resistance

## Electrical resistance and conductance

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• Duration: 8:00
• Updated: 09 Dec 2015
• views: 145
videos https://wn.com/Electrical_Resistance_And_Conductance

## Electrical resistance tomography

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• Duration: 5:43
• Updated: 28 Jul 2016
• views: 1730
videos
https://wn.com/Electrical_Resistance_Tomography

## Electrical resistive heating

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• Duration: 0:53
• Updated: 12 Apr 2017
• views: 152
videos
https://wn.com/Electrical_Resistive_Heating