It is required to measure the true open circuit e.m.f. of a battery. The best device is________?

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3231Electrical EngineeringMedium

AD.C. potentiometer

BAmmeter and a known resistance

CNone of the above

DD.C. voltmeter

Correct answer

A. D.C. potentiometer

Explanation

The correct answer is D.C. potentiometer.

It is required to measure the true open circuit e.m.f. of a battery. The best device is________? - Answer and Explanation | Academy of Pakistan