Question

Value of unknown resistance is found by using which of the following relation?

(a) Rx = \(\frac{R_1 R_3}{R_2}\)

(b) Rx = \(\frac{R_2 R_1}{R_3}\)

(c) Rx = \(\frac{R_2 R_3}{R_1}\)

(d) Rx = \(\frac{R_2}{R_1}\)

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The above asked question is from Inductance Comparison Bridge in chapter Measurement of Inductance and Capacitance of Electrical Measurements

Answer 1

Correct answer is (c) Rx = \(\frac{R_2 R_3}{R_1}\)

Explanation: The inductance comparison bridge mainly consists of pure resistances in its ratio arm. The value of unknown resistance is given by the relation Rx = \(\frac{R_2 R_3}{R_1}\).