In the given figure| Current Electricity |JEE-MAIN 2021

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JEE-MAIN 2021

25-07-2021 S1

Question

In the given figure, there is a circuit of potentiometer of length AB = 10 m. The resistance per unit length is 0.1 $\Omega$ per cm. Across AB, a battery of emf E and unternal resistance ‘r’ is connected. The maximum value of emf measured by this potentiometer is :

Select the correct option:

A

5 V

B

2.25 V

C

6 V

D

2.75 V

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