In a Wheatstone bridge Resistances are |Current Electricity

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JEE MAIN 2019

11-01-2019 S1

Question

In a Wheatstone bridge (see fig.), Resistances P and Q are approximately equal. When R $=400 \Omega$, the bridge is balanced. On interchanging P and Q, the value of R, for balance, is $405 \Omega$. The value of $X$ is close to

Select the correct option:

A

404.5 ohm

B

401.5 ohm

C

402.5 ohm

D

403.5 ohm

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