Question

17. Find internal resistance of a cell in the given electric circuit :
E = 2V
i = 0.5 A
6ohm​

Answer 1

Answer:

V=IR

v=2v

I= 0.5 A

•°• R = V/I

= 2/0.5

=4 ohm

Answer 2

Answer:

Total resistance

1/R(parallel) =1/6 +1/6

=1/3

R=3 ohm

R = V/I

=2/0.5

R =4ohm

1/r = 1/3 - 1/4

= 4 -3/12

= 1/12

r = 12 ohm