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MHT CET 2025 (26 Apr, Shift 1) · Potentiometer

Potentiometer question from MHT CET 2025 (26 Apr, Shift 1)

Q23MHT CET 2025 · 26 APR · SHIFT 1Easy

Potentiometer

The potentiometer wire is 5 m long and potential difference of 4 V is maintained between the ends. The e.m.f. of the cell which balances against a length of 200 cm of the potentiometer wire is

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Answer: (d)

$k = \frac{V}{L} = \frac{4}{5} = 0.8\ \text{V/m}$ .
$E = k l = 0.8 \times 2 = 1.6\ \text{V}$ .
So the answer is (d) 1.6 V.

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