Question

If a current of 0.5 amp. flows through a plastic wire for 4 hours , then how many electrons will flow through the wire ? a)2.24*10^22 b)4.48*10^22 c)0 d)none

Answer 1

Answer:

(a) option is right

Explanation:

I = 0.5 A

t = 2 hours = 2 × 60 × 60 s = 7200 s

Thus, Q = It

= 0.5 A × 7200 s

= 3600 C

We know that 96487C = 6.023 X 1023 number of electrons.

Then,

3600 C= (6.02*10^23 *3600) / 96487

            =2.25 * 10^22

Hence, 2.25 X 10∧22number of electrons will flow through the wire.