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JEE Main 11 Jan 2019 Shift 1 Solved Paper

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Question : 30

Total: 90

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

403.5 ohm
404.5 ohm
401.5 ohm
402.5 ohm

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