RE-NEET2026Physics-Electromagnetism
RE-NEET 2026 Physics Inductance MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Consider a long solenoid of length l and radius r. If n is the number of turns per unit length and μ₀ is the permeability of free space, the inductance of the solenoid is:
A
μ₀n²πr²l
B
(μ₀/2π)n²r²l
C
2μ₀πr²l
D
μ₀πr²l
Correct Answer
Option A
Detailed Explanation
The inductance of a solenoid is given by L = μ₀n²πr²l, where n is the number of turns per unit length, and r and l are the radius and length of the solenoid, respectively.
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