Which of the following devices should be used for accurate measurementof low D.C. voltage ?

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Question:

Which of the following devices should be used for accurate measurementof low D.C. voltage ?

A.

small range moving coil voltmeter

B.

d.c. potentiometer

C.

small range thermocouple voltmeter

D.

none of the above

Answer» b. d.c. potentiometer

Note: The above multiple-choice question is for all general and Competitive Exams in India.