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Question: Answered & Verified by Expert
A cell of e.m.f. $1.5 \mathrm{~V}$ having a finite internal resistance is connected to a load resistance of $2 \Omega$. For maximum power transfer the internal resistance of the cell should be
PhysicsCurrent ElectricityJEE Main
Options:
  • A $4 \mathrm{ohm}$
  • B $0.5 \mathrm{ohm}$
  • C $2 \mathrm{ohm}$
  • D None of these
Solution:
2664 Upvotes Verified Answer
The correct answer is: $2 \mathrm{ohm}$
For maximum power, external resistance $=$ internal resistance

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