A battery of e.m.f. E and internal resistance r is connected to a vari – McqOptions

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1.	A battery of e.m.f. E and internal resistance r is connected to a variable resistor R as shown here. Which one of the following is true [MP PMT 1995]
A.	Potential difference across the terminals of the battery is maximum when R = r
B.	Power delivered to the resistor is maximum when R = r
C.	Current in the circuit is maximum when R = r
D.	Current in the circuit is maximum when \[R>>r\]
Answer» C. Current in the circuit is maximum when R = r

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