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The balance condition of a Wheatstone bridge depends on the _________

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The balance condition of a Wheatstone bridge depends on the _________

(a) ratio of arms R1 and R1

(b) ratio of arms R3 and R4

(c) emf source and null detector

(d) current source and power source

The question was posed to me in semester exam.

My question is from Wheatstone Bridge Balance Condition in division Measurement of Resistance of Electrical Measurements

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Correct answer is (a) ratio of arms R1 and R1

Easy explanation: The ratio of the arms R1 and R2 determines the balance condition of a Wheatstone bridge. The balance condition is given by the equation R4 = ^R3R1⁄R2.

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