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MHT CET 2025 (20 Apr, Shift 2) · Kirchhoff's Laws & Measuring Instruments

Kirchhoff's Laws & Measuring Instruments question from MHT CET 2025 (20 Apr, Shift 2)

Q22MHT CET 2025 · 20 APR · SHIFT 2Easy

Kirchhoff's Laws & Measuring Instruments

Only $4\%$ of the total current in the circuit passes through a galvanometer. If the resistance of the galvanometer is G, then the shunt resistance connected to the galvanometer is

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Answer: (b)

Galvanometer and shunt are in parallel, so $I_g G = (I - I_g)S \Rightarrow S = \frac{I_g G}{I - I_g}$ .
$I_g = 0.04I \Rightarrow S = \frac{0.04G}{0.96} = \frac{G}{24}$
So the answer is (b) $\frac{G}{24}$ .

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