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When a bridge is balanced?(a) no voltage drop across the circuit(b) power dissipation is high(c) temperature of the circuit is high(d) no current flowsI had been asked this question during an interview for a job.Query is from Bridge Balance Equation topic in chapter Measurement of Inductance and Capacitance of Electrical Measurements

Answer»

The correct answer is (d) no current FLOWS

For explanation I would say: 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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