Calibration of voltmeter.
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(i) Practical voltmeters are not ideal, because these do not have infinite resistance. The error of such practical
voltmeter can be found by comparing the voltmeter reading with calculated value of p.d. by potentiometer.
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Calibration of Voltmeter and Ammeter by Potentiometer is an elite setup designed to understand the functioning and calibration of Potentiometer, Voltmeter and Ammeter. ... A Potentiometer is an instrument designed to measure an unknown voltage by comparing it with a known voltage. It has a high degree of accuracy.
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