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MHT CET 2026 (11 Apr, Shift 1) · Moving Coil Galvanometer, Ammeter & Voltmeter

Moving Coil Galvanometer, Ammeter & Voltmeter question from MHT CET 2026 (11 Apr, Shift 1)

Q10MHT CET 2026 · 11 APR · SHIFT 1Medium

Moving Coil Galvanometer, Ammeter & Voltmeter

A galvanometer has a current range of $10$ mA and a voltage range of $0.75$ V. To convert this galvanometer into an ammeter of range $10$ A, what is the shunt resistance?

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Answer: (d)

Galvanometer resistance $G = \frac{V_g}{I_g} = \frac{0.75}{0.01} = 75\ \Omega$ .
Shunt $S = \frac{I_g G}{I - I_g} = \frac{0.01 \times 75}{10 - 0.01} = \frac{0.75}{9.99}$
$S = \frac{75}{999}\ \Omega$
So the answer is (d) $\frac{75}{999}\ \Omega$ .

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