Ohm's law - derivation (using drift velocity)| Electricity | Physics | Khan Academy

By using the expression for drift velocity, electric current (in terms of drift velocity), and connection between electric field and potential, we can derive Ohm's law.

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Created by Mahesh Shenoy

[phcuibn]

I indescribably appreciate your work such a beautiful simple sat explanation, thank you very much. I just wanted to comment on your last note when you said that if there was no collisions at all the relaxation time would be infinite hence the resistance would be zero, no collisions mean the lowest possible temperature zero kelvin (-273.15 c ), where materials tend to be super conductors, so this taken path of derivation also gives us an elaboration of this phenomenon

[feelingzhakkaas]

amazing explanation . god bless you sir.

[riyazuddinabbasi]

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[aryansoji]

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[shanks_versus]

Your speech pattern is like sal's only difference is the voice. And nice explanation of drift velocity.

[riyazuddinabbasi]

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[johndoe-bqxt]

Can I use Ohm's Law to find the Voltage (V=IR) ? I mean: I= (V/R) and the substitute and solve for 'V' ?

[Hemant]

Sir when biology and chemistry videos of Hindi of class 10 will come in Khan academy india

[islamabdouabbas]

At the beginning of the explanation, you talked about (E) as a force acting on the electron, but after that (E) became an electric field???