What is the resistance of an ideal voltmeter

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What is the resistance of an ideal voltmeter

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Voltmeters measure voltage, whereas ammeters measure current. Some of the meters in automobile dashboards, digital cameras, cell phones, and tuner-amplifiers are voltmeters or ammeters. See Figure The internal construction of the simplest of these meters and how they are connected to the system they monitor give further insight into applications of series and parallel connections. A parallel connection is used because objects in parallel experience the same potential difference. A series connection is used because objects in series have the same current passing through them. Analog meters have a needle that swivels to point at numbers on a scale, as opposed to digital meters , which have numerical readouts similar to a hand-held calculator. The heart of most analog meters is a device called a galvanometer , denoted by G.

What is the resistance of an ideal voltmeter

If you're seeing this message, it means we're having trouble loading external resources on our website. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Search for courses, skills, and videos. Ohm's law and circuits with resistors. About About this video Transcript. Learn how to measure voltage and current in electrical circuits using voltmeters and ammeters. Discover why voltmeters are connected in parallel and ammeters in series.

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