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Current Electricity: JEE Mains 2022, June 28 - Shift 1

Medium· Wheatstone bridge, meter bridge, potentiometer· +4 / −1

In a meter bridge, a resistance of

15\ \Omega

is connected in the left gap and an unknown resistance

R

in the right gap. The null point (balance point) is obtained at

45\ \text{cm}

from the left end. Find the value of

R

.

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