Volt

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What Does Volt Mean?

A volt (V) is a unit of electrical potential or energy capacity. It is equal to the transmission of one joule (or unit of energy) per coulomb (or charge point). Voltage provides critical measurements for residential and commercial electrical systems in terms of the potential energy transmission of current.

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Techopedia Explains Volt

In the common type of alternating current found in residential and commercial systems, voltage tends to change continually. Engineers may use a measurement called the “root mean square” to show the average or standard voltage.

Tools used to measure voltage include a multimeter, which can measure two different points of the system. Voltage is used as a common measurement for different types of battery-connected and current-connected electrical systems. For example, in the range of 1 to 3 V for certain kinds of batteries and 100 or 120 V in residential systems. Some public transportation systems have much higher voltages of several hundred volts, which raises the safety and security standards for these systems.

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Margaret Rouse
Senior Editor
Margaret Rouse
Senior Editor

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.