- a calibrated instrument for measuring the potential difference between two points.
Origin of voltmeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for voltmeter
The voltmeter cost $7, and the ammeter $10; and the switches and fuses could be had for $5.Electricity for the farm
Frederick Irving Anderson
In fact, a voltmeter is an ammeter which has had its shunt removed or disconnected.
Hence a voltmeter must be placed across a circuit and not in it.
What would happen if a voltmeter were put in series in a line?
This reading is taken from the voltmeter supplied with the plant.Mechanical Devices in the Home
Edith Louise Allen
- an instrument for measuring potential difference or electromotive force
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for voltmeter
Online Etymology Dictionary, © 2010 Douglas Harper
- An instrument used for measuring the difference in voltage between two points in an electric circuit. Voltmeters typically make use of an ammeter that measures current flow across a known resistance inside the voltmeter; direct-current voltages can then be determined by Ohm's law. Digital voltmeters employ A/D converters to provide the numerical value of the voltage displayed. Compare ohmmeter.
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