Question

27. in the given circuit, the internal resistance of the battery equals:

a. 0.5 0.
b. 10
C. 2 0
d. 40
A A​

Answer 1

Explanation:

4ohm and 4ohm are parallel

1/Rp = 1/4 + 1/4

= 1/2

Rp = 2ohm

Now 4ohm and 2ohm are in series

Rs = 4 + 2

= 6ohm

R = 6ohm

V = 14V

V = IR

14 = I x 6

I = 14/6

= 7/3

= 2.5 A