voltmeter

[vohlt-mee-ter]
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noun Electricity.

a calibrated instrument for measuring the potential difference between two points.

Origin of voltmeter

First recorded in 1880–85; volt1 + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for voltmeter

Historical Examples of 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.

    Physics

    Willis Eugene Tower

  • Hence a voltmeter must be placed across a circuit and not in it.

    Physics

    Willis Eugene Tower

  • What would happen if a voltmeter were put in series in a line?

    Physics

    Willis Eugene Tower

  • This reading is taken from the voltmeter supplied with the plant.


British Dictionary definitions for voltmeter

voltmeter

noun

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
n.

1882, from volt + meter (n.3).

Online Etymology Dictionary, © 2010 Douglas Harper

voltmeter in Science

voltmeter

[vōltmē′tər]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.