A 24 V battery of internal resistance 4 Ω is connected to a variable resistance. If the rate of heat production in the resistor is maximum, then the current in the circuit is

Question

A 24 V battery of internal resistance 4 Ω is connected to a variable resistance. If the rate of heat production in the resistor is maximum, then the current in the circuit is, 2 A, 3 A, 4 A, 6 A

MARKS App · Accepted Answer

When R = r (power dissipated is maximum) ∴ R = 4 Ω ∴ I = V R n e t = 24 8 = 3 A

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