Question

Derive an expression for electric current in metallic conductor

Answer 1

Answer:????????? dont know

Explanation:

Answer 2

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)