Voltmeter

A voltmeter is an instrument used to measure electrical difference between two points in an electric circuit. Voltmeters have an accuracy of a few per cent of the full scale.The voltmeter has two wires to measure voltage.

The first digital voltmeter was invented and produced by Andrew Kay in 1954. The numbers mean

1K 1000
1M 10000
1G 100000
VoltmeterVolts.jpg
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