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
Share your understanding of this question with the correct explanation.