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MHT CET 2026 (13 May, Shift 2) · Moving Coil Galvanometer, Ammeter & Voltmeter

Moving Coil Galvanometer, Ammeter & Voltmeter question from MHT CET 2026 (13 May, Shift 2)

Q2MHT CET 2026 · 13 MAY · SHIFT 2Easy

Moving Coil Galvanometer, Ammeter & Voltmeter

An ammeter has resistance $R$ and range $I$ . What resistance should be connected in parallel with it to increase its range by $nI$ ?

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Answer: (c)

Range increased by $nI$ means new range $= (n+1)I$ .
Shunt: $S = \frac{R\,I}{I_{new} - I} = \frac{RI}{nI}$
$S = \frac{R}{n}$
So the answer is (c) $\frac{R}{n}$ .

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