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

[@user-ph5cu7ib8n]

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

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amazing explanation . god bless you sir.

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it's khan academy

[@KobingH]

Cleared my concept thanks

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[@shanks_versus8115]

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

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I was just waiting for this video

[@Hemant841]

Brilliant video

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[@johndoe-bq1xt]

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

[@Hemant841]

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And sir class 6 also

[@islamabdouabbas4430]

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???

[@paulinercopoth]

The electric field is defined as the force exerted by the electric field over a test charge (a charge so small as to not influence the original charge that creates the electric field in the first place): E = F/q

[@swsaber8199]

sir why elctric field uniform..🙄

[@carl_johnson_]

Actually electric fields within a conductor can vary due to impurities, temperature differences, and other factors, but the assumption of a uniform field provides a useful starting point for learning and understanding the basic principles.hope you understood it.

[@chakravarthigudditi5798]

Hi sir

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Isn't this Mahesh?

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