Under which of the following conditions a bridge is balanced? - Measurements and Instrumentation

Electronics and Communication Engineering (ECE) : Measurements and Instrumentation - Quiz(MCQ)

Under which of the following conditions a bridge is balanced?

A)

When no current flows

B)

When power dissipation is high

C)

When no voltage drop across the circuit

D)

When the temperature of the circuit is high

Correct Answer : Option (A) : When no current flows

Explanation : At balance condition, no current flows through the headphones present in the AC bridge circuit. As a result the detector indicates null deflection at balance condition.

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