Q.

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» C. from the same source as the unknown voltage
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Temesgen
2 years ago

This page is very intersted.
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