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JEE Main 2005

Exam: JEE Main
Year: 2005
Subject: Physics
Chapter: Electromagnetic Induction

JEE Main 2005 · Physics · Electromagnetic Induction

The self inductance of the motor of an electric fan is 10 H . In...

The self inductance of the motor of an electric fan is

10 \mathrm{H}

. In order to impart maximum power at

50 \mathrm{~Hz}

, it should be connected to a capacitance of

Options

A $C=4 \mu F$
B $C=8 \mu F$
C $C=1 \mu F$
D $C=2 \mu F$

Correct answer

C. $C=1 \mu F$

Step-by-step solution

f=\frac{1}{2 \pi \sqrt{L C}}

C=\frac{1}{4 \times \pi^2 f^2 \times 10}

C=1 \mu F

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