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MHT CET 2024 (16 May, Shift 2) · Kirchhoff's Laws & Measuring Instruments

Kirchhoff's Laws & Measuring Instruments question from MHT CET 2024 (16 May, Shift 2)

Q64MHT CET 2024 · 16 MAY · SHIFT 2Medium

Kirchhoff's Laws & Measuring Instruments

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: (d)

Range $V = I_g(G + R)$ with fixed $I_g$ .
The intended reading is that the $2000\ \Omega$ replaces the $200\ \Omega$ : $G + 2000 = 3(G + 200)$ .
$2G = 1400 \Rightarrow G = 700\ \Omega$
So the answer is (d) $700\ \Omega$ .

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