When the Wheatstone bridge shown is used to find value of resistance R x , the galvanometer G indicates zero current when R 1 = 50 Ω, R 2 = 65 Ω & R 3 = 100 Ω. if R 3 is known with 5% tolerance on its nominal value of 100 Ω What is the range of R x in ohms.

Correct Answer is : [123.5, 136.5]

GATE Electrical Engineering (EE) 2015 Shift 1 Solved Paper

Question : 15 of 65

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When the Wheatstone bridge shown is used to find value of resistance R_x, the galvanometer G indicates zero current when R₁ = 50 Ω, R₂ = 65 Ω & R₃ = 100 Ω. if R₃ is known with 5% tolerance on its nominal value of 100 Ω What is the range of R_x in ohms.

[123.5, 136.5]
[125.898, 134.12]
[117, 143]
[120.25, 139.75]

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