Difference between revisions of "Voltage"
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==Definitions== | ==Definitions== | ||
*1: [[electric]] [[potential]] or potential difference expressed in volts | *1: [[electric]] [[potential]] or potential difference expressed in volts | ||
*2: [[intensity]] of [[feeling]] | *2: [[intensity]] of [[feeling]] | ||
==Description== | ==Description== | ||
| − | '''Voltage''', electrical potential difference, or an electric tension (denoted ∆V and measured in units of electric potential: [ | + | '''Voltage''', electrical potential difference, or an electric tension (denoted ∆V and measured in units of electric potential: [https://en.wikipedia.org/wiki/Volt volts], or [https://en.wikipedia.org/wiki/Joule joules] per [https://en.wikipedia.org/wiki/Coulomb coulomb]) is the electric potential difference between two points, or the difference in [https://en.wikipedia.org/wiki/Electric_potential_energy electric potential energy] of a unit test [https://en.wikipedia.org/wiki/Electric_charge charge] transported between two points. Voltage is equal to the work done per unit charge against a static [https://en.wikipedia.org/wiki/Electric_field electric field] to move the charge between two points. A voltage may represent either a source of energy ([https://en.wikipedia.org/wiki/Electromotive_force electromotive force]), or lost, used, or stored energy (potential drop). A [https://en.wikipedia.org/wiki/Voltmeter voltmeter] can be used to measure the voltage (or potential difference) between two points in a system; usually a common reference potential such as the ground of the system is used as one of the points. Voltage can be caused by static electric fields, by [https://en.wikipedia.org/wiki/Electric_current electric current] through a [https://en.wikipedia.org/wiki/Magnetic_field magnetic field], by time-varying magnetic fields, or some combination of these three.[https://en.wikipedia.org/wiki/Voltage] |
[[Category: Physics]] | [[Category: Physics]] | ||
Latest revision as of 02:40, 13 December 2020
Definitions
Description
Voltage, electrical potential difference, or an electric tension (denoted ∆V and measured in units of electric potential: volts, or joules per coulomb) is the electric potential difference between two points, or the difference in electric potential energy of a unit test charge transported between two points. Voltage is equal to the work done per unit charge against a static electric field to move the charge between two points. A voltage may represent either a source of energy (electromotive force), or lost, used, or stored energy (potential drop). A voltmeter can be used to measure the voltage (or potential difference) between two points in a system; usually a common reference potential such as the ground of the system is used as one of the points. Voltage can be caused by static electric fields, by electric current through a magnetic field, by time-varying magnetic fields, or some combination of these three.[1]
