The sliding contact C is at one fourth of the length of the potential wire ( A B ) from A as shown in the circuit diagram. If the resistance of the wire A B is R 0 , then the potential drop ( V ) ac

Question

The sliding contact C is at one fourth of the length of the potential wire ( A B ) from A as shown in the circuit diagram. If the resistance of the wire A B is R 0 ​ , then the potential drop ( V ) across the resistor R is: NEET 2022 (Phase 2)

TestHub · Accepted Answer

The given diagram can be redrawn as follow: The potential across A C , V AC ​ = R BC ​ + R AC ​ R AC ​ ​ × V 0 ​ ​ 4 3 R 0 ​ ​ + 4 R + R 0 ​ R R 0 ​ ​ 4 R + R 0 ​ R R 0 ​ ​ ​ × V 0 ​ = 3 R 0 ​ + 16 R 4 R V 0 ​ ​ ​

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