Question

How many electrons flow through a wire when a charge of 0.5 ampere flows through a wire for 2 hours?

Answer 1

We know,

Q = It

So, Q = 0.5A × 120 sec

Therefore, No. of charges = 60 Coulomb.

Answer 2

hey mate.....

here,given.that ,

I = 0.5 amp,Time = 2 hrs so TIME IN SECOND IS...2 ×60×60=7200 sec...

now,we know that ,,,I = Q/T...

SO,Q=I×T

=0.5×7200

= 3600 COULMB

now we know that,

q=n×e

so n = q /e

n =3600÷1.6×10exponent-19

so,n=225×10exponent20 electrons.

HOPE IT HELPS!!!!!!!!