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Current Electricity question

2024 · 31 Jan · Shift 2 · Q75

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JEE Main
Physics
Current Electricity
2024 · 31 Jan · Shift 2 · Q75

Current Electricity question

2024 · 31 Jan · Shift 2 · Q75

JEE MainPhysicsCurrent ElectricityMCQ+4 / −1

The resistance per centimeter of a meter bridge wire is

r

, with

X \Omega

resistance in left gap. Balancing length from left end is at

40 \mathrm{~cm}

with

25 \Omega

resistance in right gap. Now the wire is replaced by another wire of

2 r

resistance per centimeter. The new balancing length for same settings will be at

A
10 cm
B
80 cm
C
40 cm
D
20 cm

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