Answers

2016-07-29T20:56:23+08:00
A DC voltmeter measures the current passing between two points. The normal use of a voltmeter is to check the power in an electrical circuit. 
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2016-07-29T20:56:53+08:00
A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. Some voltmeters are intended for use in direct current (DC) circuits; others are designed for alternating current (AC) circuits.
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