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Question: Answered & Verified by Expert
A battery of emf 10 V and internal resistance of 0.5 ohm is connected across a variable resistance $R$. The maximum value of $R$ is given by
PhysicsCurrent ElectricityJIPMERJIPMER 2013
Options:
  • A $0.5 \Omega$
  • B $1.00 \Omega$
  • C $2.0 \Omega$
  • D $0.25 \Omega$
Solution:
1792 Upvotes Verified Answer
The correct answer is: $0.5 \Omega$
We know that for obtaining maximum power, the internal resistance must be equal to variable resistance so, the value of $R$ will be $0.5 \Omega$

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