JEE Main 2019 — Electromagnetic Induction Question with Solution
JEE Main 2019 (11 Jan Shift 1)
Question
There are two long co-axial solenoids of same length . The inner and outer coils have radii and and number of turns per unit length and , respectively. The ratio of mutual inductance to the self-inductance of the inner-coil is :
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
The rate of mutual inductance is given by
The rate of self inductance is given by
Dividing (i) by (ii)
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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.