Fundamentholfundamenthol
JEE Main2019Physics
Q.

In the circuit shown, a four-wire potentiometer is made of a 400 cm long wire, which extends between A and B. The resistance per unit length of the potentiometer wire is r = 0.01 / cm. If an ideal voltmeter is connected as shown with jockey J at 50 cm from end A, the expected reading of the voltmeter will be: 

  1. A

    0.75 V

  2. B

    0.50 V

  3. C

    0.20 V

  4. D

    0.25 V

Solution

← Back to full paper

Practice more Physics

Concept-wise practice with instant solutions on Fundamenthol.

Start practicing →