Question:medium

When an unknown resistance is connected in the left gap and a resistance of 15 $\Omega$ is connected in the right gap of a meter bridge, the balancing point is found to be at 40 cm from the left end of the bridge wire. The emf of the battery of negligible internal resistance used in the circuit is 2 V. If the current drawn from the battery is 280 mA, the resistance of the bridge wire per unit length is

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Understand the circuit diagram: The battery is connected across the ends of the 1m wire. The resistors X and R are connected in series with each other, and this combination is in parallel with the wire.

Updated On: Mar 31, 2026

$0.4 \Omega cm^{-1}$
$0.3 \Omega cm^{-1}$
$0.1 \Omega cm^{-1}$
$0.2 \Omega cm^{-1}$

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The Correct Option is C

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The Correct Option is C

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