The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of 24 Ω is applied. The resistance of galvanometer coil will be :

Physics · Current Electricity

JEE Main 2024 — 29 January, Shift 1 — Question 42

The deflection in moving coil galvanometer falls from 25 divisions to 5 division when a shunt of $24 \Omega$ is applied. The resistance of galvanometer coil will be :

Option A:
$12 \Omega$
Option B:
$96 \Omega$
Correct
Option C:
$48 \Omega$
Option D:
$100 \Omega$

Answer: B

Step-by-step solution

Let $\mathrm{x}=$ current/division

After applying shunt Now

$5 \mathrm{x} \times \mathrm{G}=20 \mathrm{x} \times 24$

$\mathrm{G}=4 \times 24$

$\mathrm{G}=96 \Omega$

Answer key and solution verified before publishing.

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Exam: JEE Main 2024
Paper: 29 January, Shift 1
Subject: Physics
Chapter: Current Electricity
Topic: Electrical Measuring Instruments

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Answer: B

Step-by-step solution

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