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voltmeter
voltmeter instrument used to measure differences of electric potential , commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an ammeter and an ohmmeter in a multipurpose instrument. Most voltmeters are based on the d'Arsonval galvanometer and are of the analog type, i.e., they give voltage readings that can vary over a continuous range as indicated by a scale and pointer. However, digital voltmeters, which provide voltage readings that are composed of a group of digits, are becoming increasingly common. Since an oscilloscope is capable of giving a calibrated visual indication of voltage, it can be called a voltmeter. See also potentiometer . |
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"voltmeter." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "voltmeter." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1E1-voltmete.html "voltmeter." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-voltmete.html |
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voltmeter
voltmeter Instrument for measuring the voltage (potential difference) between two points in an electrical circuit. Voltmeters are always connected in parallel with the components whose voltages are being measured. A voltmeter has a high internal resistance compared with the resistance across which it is connected. See also ammeter
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"voltmeter." World Encyclopedia. 2005. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "voltmeter." World Encyclopedia. 2005. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O142-voltmeter.html "voltmeter." World Encyclopedia. 2005. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-voltmeter.html |
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voltmeter
volt·me·ter / ˈvōltˌmētər/ • n. an instrument for measuring electric potential in volts. |
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Cite this article
"voltmeter." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>. "voltmeter." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 28, 2012). http://www.encyclopedia.com/doc/1O999-voltmeter.html "voltmeter." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-voltmeter.html |
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