Derive an expression for electric current in metallic conductor
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Answer:????????? dont know
Explanation:
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Explanation:
In a conducting solid, an electron will suffer collisions with fixed heavy ions. After collisions,
electron will emerge with same speed, but direction changes randomly. If we consider
N number of electrons in a given volume, since directons are changed randomly due to collisions,
average velocity of N electrons will be zero.
This is expressed as begin mathsize 12px style 1 over N sum from i equals 1 to N of v subscript i space equals space 0 end style.................(1)
If electrons are accelerated by electric field E, then acceleration is given by, a = -eE/m ..........(2)
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