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In the circuit shown here, cells A and B...


In the circuit shown here, cells A and B have emf 10 V each and the internal resistance is `5Omega` for A and `3Omega` for B. For what value of R will the potential difference across thhe cell A will be zero?

A

zero

B

1ohm

C

2ohm

D

3ohm

Text Solution

Verified by Experts

The correct Answer is:
C
`i=(e_(1)-e_(2))/(R+r_(1)+r_(2)),v=e_(1)-ir_(1)=0_(7)`
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