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

In a Wheatstone bridge (see fig.), resistances P and Q are approximate

1.	In a Wheatstone bridge (see fig.), resistances P and Q are approximately equal. When R=400 Ω, the bridge is balanced. On interchanging P and Q, the value of R, for balance, is 405 Ω. The value of X is close to:
Answer» In a Wheatstone bridge (see fig.), resistances $P$ and $Q$ are approximately equal. When $R = 400 Ω,$ the bridge is balanced. On interchanging $P$ and $Q$ , the value of $R$ , for balance, is $405 Ω$ . The value of $X$ is close to:

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

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