HOW IS A VOLTMETER USEFUL?
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A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. ... Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit; digital voltmeters give a numerical display of voltage by use of an analog-to-digital converter.
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A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. ... General-purpose analog voltmeters may have an accuracy of a few percent of full scale, and are used with voltages from a fraction of a volt to several thousand volts.
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