Question

a current of 4 ampere is passed through a bulb for 2 minutes calculate number of electrons pass through it​

Answer 1

Answer:

No. of electrons passed in 2 min = 30×10^20

Explanation:

I=4 A

t=120 s

charge on a electron(e) = 1.6×10^-19

let no. of electrons be n

Total charge = ne

I=ne/t

4=n(1.6×10^-19)/120

on solving this

n=30×10^20

n=3×10^21