voltmeter
Americannoun
noun
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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.
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Compare ohmmeter
Etymology
Origin of voltmeter
Vocabulary lists containing voltmeter
Electrical Engineering
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Engineering - Middle School
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Engineering - High School
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A voltmeter in the external circuit allows measurement of the potential difference between the two half-cells.
From Textbooks ● Feb. 14, 2019
The circuit shown in the figure below includes a resistor R in series with a battery along with an ammeter and voltmeter to measure the current and voltage respectively.
From Textbooks ● Aug. 12, 2015
A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit.
From Textbooks ● Aug. 12, 2015
Suppose you want 10 V to produce a full- scale deflection of a voltmeter containing a 25-Ω galvanometer with a 50-µA sensitivity.
From Textbooks ● Aug. 12, 2015
If this causes the voltmeter pointer to return to the "0" line, the cutout is defective and a new one should be installed, unless the trouble can be found by inspection and repaired.
From The Automobile Storage Battery Its Care And Repair by Otto A. Witte
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
