Question

If a charge of 30C flows through a wire in 15s as the work done across it’s ends is 180 J. Find the current passing through the wire, it’s resistance and P.D across its ends.

Answer 1

Answer:

I=2A

V=6V

R=3ohms

Explanation:

Q=30C

t=15s

W=180J

P=W/t

=180/15

=12W

I=Q/t

30/15

=2A

We have,

P=VI

V=P/I

=12/2

=6V

R=V/I

=6/2

=3ohms