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JEE · NEET Previous Year Question

$If N is the number of turns in a circular coil then the value of self inductance varies as$

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

A $N^{0}$
B $N$
C $N^{2}$
D $N^{- 2}$

Correct answer: C

Solution

(c) Self inductance of a circular coil is L = \frac{1}{2} μ_{0} N^{2} πR where, N = Number of turns in the coil R = Radius of the coil ∴ L \propto N^{2}

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