- published: 07 Nov 2016
- views: 199674
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...
A simple description of electric resistance, how the electricity is affected and how the resistance determines the heat output of electric heating elements
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?
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
We have explained here what is resistance and what is the basic theory behind it.
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.
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.
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
A 110 volt light bulb and a 1.5 volt mini light bulb are wired in series to a nine volt battery. What will happen when the electricity flows? This is a nice simple demonstration of how temperature can affect the resistance in a conductor. The result is called a positive temperature coefficient. In metal conductors, there are already a large number of free electrons flowing through it, the vibrations of the atoms cause many collisions between the free electrons and the captive electrons. Each collision uses up some energy from the free electron and is the basic cause of resistance. The more the atoms bump around in the material, the more collisions there are and the friction causes the material to heat up, this then increases the resistance causing the decrease in current flow.
Trying to explain 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.
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...
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
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.