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Question: Answered & Verified by Expert
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
PhysicsCurrent ElectricityJEE Main
Options:
  • A 2 A
  • B 3 A
  • C 4 A
  • D 6 A
Solution:
2505 Upvotes Verified Answer
The correct answer is: 3 A
When R=r (power dissipated is maximum)



∴ R=4 Ω

∴I=VRnet= 248= 3 A

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