JEE Main 2019PhysicsElectromagnetic InductionEasyMCQ

JEE Main 2019 — Electromagnetic Induction Question with Solution

JEE Main 2019 (09 Apr Shift 1)

Question

The total number of turns and cross-section area in a solenoid is fixed. However, its length L is varied by adjusting the separation between windings. The inductance of solenoid will be proportional to:

Choose an option

Show full solutionCorrect option: C
Correct answer
C1L

Step-by-step explanation

Self-Inductance =μ0n2πr2L (n = number of turns per unit length)
=μ0NL2πr2L
=μ0N2πr2L
Self-Inductance ∝1L

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About this question

This is a previous-year question from JEE Main 2019, covering the Electromagnetic Induction chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.