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Physics · Electromagnetic Induction

JEE Main 2025 — 23 January, Morning Shift — Question 49

Regarding self-inductance : A : The self-inductance of the coil depends on its geometry. B : Self-inductance does not depend on the permeability of the medium. C : Self-induced e.m.f. opposes any change in the current in a circuit. D : Self-inductance is electromagnetic analogue of mass in mechanics. E : Work needs to be done against self-induced e.m.f. in establishing the current. Choose the correct answer from the options given below:

  1. Option A:

    A, B, C, D only

  2. Option B:

    A, C, D, E only

    Correct
  3. Option C:

    A, B, C, E only

  4. Option D:

    B, C, D, E only

Answer: B

Step-by-step solution

Self inductance of coil

L=μ0 N2 A2πR\mathrm{L}=\frac{\mu_{0} \mathrm{~N}^{2} \mathrm{~A}}{2 \pi \mathrm{R}}

Answer key and solution verified before publishing.

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Exam
JEE Main 2025
Paper
23 January, Morning Shift
Subject
Physics
Chapter
Electromagnetic Induction
Topic
Self-Inductance and Mutual Inductance and Energy Density

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