Question

find the number of electrons transfered when 5mA of current flows through a conductor during the time 2 min​

Answer 1

Hey, there!

Here's the answer you are looking for.

Current = Charge / time

Charge = Current × time

Here, total charge that flows through the conductor in 2 mins

= (say) Q

= 5 × 10^(-3) A × 2 min × 60 (all in S. I. Unit)

= 0.6 C

Also total charge = number of electrons × charge of elections

i. e., Q = ne

So, n = Q/e = 0.6/[1.6 × 10^(-19)]

= 3.7 × 10^(18) (approx)

Thus, total number of electrons transfered when 5mA of current flows through a conductor during the time 2 min is 3.7 × 10^(18).

Hope this helps.

Thanks.