For measuring voltage of any circuit, potentiometer is preferred to voltmeter because
A. the potentiometer is cheap and easy to handle.
B. calibration in the voltmeter is sometimes wrong .
C. the potentiometer almost draws no current during measurement.
D. range of the voltmeter is not as wide as that of the potentiometer.
Answer:C
For measuring voltage of any circuit, potentiometer is preferred to voltmeter because
A. the potentiometer is cheap and easy to handle. B. calibration in the voltmeter is sometimes wrong . C. the potentiometer almost draws no current during measurement. D. range of the voltmeter is not as wide as that of the potentiometer.