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MHT CET 2026 (15 Apr, Shift 1) · Moving Coil Galvanometer, Ammeter & Voltmeter

Moving Coil Galvanometer, Ammeter & Voltmeter question from MHT CET 2026 (15 Apr, Shift 1)

Q15MHT CET 2026 · 15 APR · SHIFT 1Medium

Moving Coil Galvanometer, Ammeter & Voltmeter

When a resistance of $200\ \Omega$ is connected in series with a galvanometer of resistance G, its range is V. To triple its range, a resistance of $2000\ \Omega$ is connected in series. The value of G is

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Answer: (c)

Range $V = I_g(G + R_{series})$ . Take the $2000\ \Omega$ as the new series resistance in place of $200\ \Omega$ .
$V = I_g(G + 200)$ and $3V = I_g(G + 2000)$
$3G + 600 = G + 2000 \Rightarrow G = 700\ \Omega$
So the answer is (c) $700\ \Omega$ .

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