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Can moving coil galvanometer be used to detect ac in a circuit give reason?
Wiki User
∙ 11y ago
Moving coil galvanometer is used to detect unknown resitance of the both ac or dc circuits :)
deepak instrumentation engineer
AnswerA 'galvanometer' is simply an instrument that detects and measures small currents; 'moving coil' describes its operating principle. A moving-coil galvanometer is a d.c. instrument; if subject to a.c., then it will simply vibrate as it will not be able to respond the the frequency (unless the frequency is very low, in which case, it will sweep back and forth in step with that frequency).
The moving-coil principle is applied to other instruments, and can be used in the construction of multimeters. In the case of a multimeter, a rectifier circuit is incorporated so that it can be used to measure a.c. currents and voltages.
Wiki User
∙ 11y ago
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