write the characteristics of voltmeter
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A basic analog voltmeter consists of a sensitive galvanometer (current meter) in series with a high resistance. The internal resistance of a voltmeter must be high. Otherwise it will draw significant current, and thereby disturb the operation of the circuit under test.
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A voltmeter,also known as a voltage meter,is used for measuring the potential difference,or voltage, between two points is an electrical or electronic circuit.Some voltmeters are intended for use in direct current (DC) circuits; others are designed for alternating current (AC) circuits. Specialized voltmeters can.measure radio frequency (RF) voltage.
A basic analog voltmeter consists of a sensitive galvanometer (current meter) in series with a high resistance.The internal resistance of a voltmeter must be high. Otherwise it will draw significant current,and thereby disturb the operation of the circuit under test.
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