Question

A current of 25 milliampere flows for 2 hour through a conductor.Calculate number of electrons

Answer 1

Explanation:

current is equal to 25 milliampere

time is equal to 2 hours

time is equal to 2 x 60 x 60 = 7200 sec

we know that Q is equal to you n*e

also know that Q is equal to i

x t by putting the values of t and I

q=i*t

=25*10-3amphere*7200sec

=180000*10-3

n=q\e

=180000\1.6*10-19

n=112500*10+16

Answer 2

Answer:

-1125x10^21

Explanation:

n-1125x10^21