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Battery shown in figure has e.m.f. E and...

Battery shown in figure has e.m.f. `E` and internal resistance `r`. Current in the circuit can be varied by sliding the contact `J`. If at any instant current flowing through the circuit is `I`, potential difference between terminals of the cells is `V`, thermal power generated in the cell is equal to `eta` fraction of total electrical power generated in it, then which of the following graphs is correct ?

A

B

C

D

Both (a) and (b) are correct

Text Solution

Verified by Experts

The correct Answer is:
D
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