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JIPMER 2013

Exam: JIPMER
Year: 2013
Subject: Physics
Chapter: Current Electricity

JIPMER 2013 · Physics · Current Electricity

A battery of emf 10 V and internal resistance of 0.5 ohm is...

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

Options

A $0.5 \Omega$
B $1.00 \Omega$
C $2.0 \Omega$
D $0.25 \Omega$

Correct answer

A. $0.5 \Omega$

Step-by-step solution

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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