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Physics-Self & Mutual Induction

NEET Physics Self & Mutual Induction MCQ Question

Type: MCQ-numerical-Medium-Class 12

What is the mutual inductance of two coaxial solenoids with relative permeability μr, where the inner solenoid S1 has a radius r1 and number of turns per unit length n1, and the outer solenoid S2 has a number of turns per unit length n2 and length l?

A

μr μ0 n1 n2 π r1² l

B

μr μ0 n1 n2 π r1 l

C

μ0 μr n1 n2 π r1² l

D

μr μ0 n1 n2 π r1² / l

Correct Answer

Option A

Detailed Explanation

According to the NCERT context, the mutual inductance M = μr μ0 n1 n2 π r1² l, using the dimensions and parameters given for the solenoids.

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