Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-diagram based-Medium-Class 12
Consider a diagram of two long solenoids, S1 and S2, placed coaxially with each other. Solenoid S1 has n1 turns per unit length, and solenoid S2 has n2 turns per unit length. Which equation correctly represents the mutual inductance M21 of solenoid S2 with respect to solenoid S1?
A
M21 = μ0 n1 n2 π r^2 l
B
M21 = μ0 n1 n2 π r l^2
C
M21 = μ0 n1 n2 π r^2
D
M21 = μ0 n1 n2 r^2 l
Correct Answer
Option A
Detailed Explanation
The mutual inductance M21 of solenoid S2 with respect to solenoid S1 is given by M21 = μ0 n1 n2 π r^2 l, considering the solenoids are long and the magnetic field is assumed to be confined inside the solenoids.
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