Current Electricity Question 14

Question 14 - 2024 (29 Jan Shift 1)

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 :

(1) $12 \Omega$

(2) $96 \Omega$

(3) $48 \Omega$

(4) $100 \Omega$

Show Answer

Answer: (2)

Solution:

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

After applying shunt

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

$G=4 \times 24$

$G=96 \Omega$