Question

Balance equation for computing the unknown resistance is?

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

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

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

(d) Rx = \(\frac{1}{R_1}\)

The question was asked in an online interview.

I need to ask this question from Maxwell’s Inductance Capacitance Bridge topic in portion Measurement of Inductance and Capacitance of Electrical Measurements

Answer 1

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

For explanation I would say: The balance condition for determining the value of the unknown resistance is given by the relation Rx = \(\frac{R_2 R_3}{R_1}\)

where, R1 and R3 are variable resistances and R2 is a fixed resistance.