JEE Main 2022 — Magnetic Effects of Current Question with Solution
JEE Main 2022 (28 Jul Shift 1)
Question
The current sensitivity of a galvanometer can be increased by :
(A) decreasing the number of turns
(B) increasing the magnetic field
(C) decreasing the area of the coil
(D) decreasing the torsional constant of the spring
Choose the most appropriate answer from the options given below :
Choose an option
Show full solutionCorrect option: D
Step-by-step explanation
The current in the galvanometer is calculated by .
Therefore, the sensitivity of the galvanometer,
Hence, only options B and D are correct.
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This is a previous-year question from JEE Main 2022, covering the Magnetic Effects of Current 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.