_ To measure an A. C. voltage by using an A.C. potentiometer, it is de – McqOptions

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1.	_ To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken$?
A.	From a source which is not the same as the unknown voltage
B.	From a battery
C.	From the same source as the unknown voltage
D.	Any of the above
Answer» D. Any of the above

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