Question

The Internal Resistance of two cells are 2ohms P.D. is 18v when supplies a current of 3A C
​

Answer 1

Answer:

Since the batteries are connected in reverse polarities, the net potential applied to the circuit =8V−4V=4V

The net resistance in the circuit =R+r

1

+r

2

=9Ω+1Ω+2Ω=12Ω

Hence, the current in the circuit =

12Ω

4V

=

3

1

A

Potential difference across P and Q =IR =

3

1

A×9Ω =3V

Answered By

toppr

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