JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

P=Q=R=10 \Omega

and

S=20 \Omega

, then what resistance should be joined with

S

to balance the Wheatstone's network?

View answer and explanation

Correct option: C

Join a resistance of

20 \Omega

in parallel with

S

Option B (Join a resistance of

20 \Omega

in parallel with

S

) is correct because it reduces the effective resistance of S to

10 \Omega

, balancing the Wheatstone bridge.

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