Question

When is the bridge circuit balanced?

(a) When voltage is applied

(b) When current flows through the opposite ends of the bridge circuit

(c) When no current flows through the galvanometer

(d) When impedance is minimum

I have been asked this question in exam.

I need to ask this question from Introduction of Bridges in section Measurement of Resistance of Electrical Measurements

Answer 1

Correct choice is (c) When no current flows through the galvanometer

To explain: The bridge circuit is said to be balanced when no current flows through the null indicator which is generally a galvanometer.