A 24 V battery of internal resistance r = 4 ω connected to a variable resistance R.

The rate of heat dissipation in the resistor is maximum when the current drawn from the battery is I.

The current drawn from the battery will be 1/2 when R is equal to

A. 8 ω

B. 12 ω

C. 16 ω

D. 20 ω

## Show Answer

Answer: B

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