A galvanometer is used as a_________(a) current source(b) voltage source(c) null detector(d) input impedanceI got this question by my school principal while I was bunking the class.My doubt stems from Wheatstone Bridge Balance Condition in division Measurement of Resistance of Electrical Measurements

A galvanometer is used as a_________(a) current source(b) voltage sour

1.	A galvanometer is used as a_________(a) current source(b) voltage source(c) null detector(d) input impedanceI got this question by my school principal while I was bunking the class.My doubt stems from Wheatstone Bridge Balance Condition in division Measurement of Resistance of Electrical Measurements
Answer» Correct answer is (c) NULL detector The BEST I can EXPLAIN: A galvanometer is used as a null detector to detect the flow of current ACROSS the ends of the two OPPOSITE junctions of the circuit. Voltage source is used for providing the required dc supply to the bridge.

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