The resistance per centimeter of a meter bridge wire is …, with … resistance in left gap. Balancing length from left end is at … with … resistance in right gap. Now the wire is replaced by another wire of … resistance per centimeter. The new balancing length for same settings will be at

Current Electricity

JEE Main 2024 · 31 Jan, Evening shift · Q6493

PhysicsMedium226×since 2002Q6493

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