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In figure , battery of emf E has interna...

In figure , battery of emf E has internal reistance r and a variable resistor. At an instant, curent flowing through the circuit is i, potential difference between the terminals of cells is V, thermal power developed in external circuit is P, and thermal power developed in the cell is equal to fraction `eta` of total electrical generated in it. Which of the following graphs is//are correct?

A

B

C

D

Both a and b are correct

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The correct Answer is:
D
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CENGAGE PHYSICS ENGLISH-HEATING EFFECT OF CURRENT-Thermal Power in Resistance Connected in Circuit
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