Electric potential
Electric Potential
Electric potential (pronounced: /ɪˈlɛktrɪk pəˈtɛnʃəl/), also known as electric field potential, potential difference, or voltage, is a fundamental concept in electromagnetism. It is a measure of the work done by an electric field to move a unit positive charge from a reference point to a specific point in the field without producing any acceleration.
Etymology
The term "electric potential" comes from the Latin word potentia, meaning "power". It was first used in this context by the French physicist Ampère in the 19th century.
Definition
In the SI system, electric potential is measured in volts (V), which is equivalent to joules per coulomb (J/C). The electric potential at a point in space is defined as the electric potential energy per unit charge that would be present at that point.
Related Terms
- Electric Potential Energy: The potential energy a unit positive charge has as a result of its position in an electric field.
- Potential Difference: The difference in electric potential between two points in an electric field.
- Voltage: A synonym for electric potential or potential difference, named after the Italian physicist Volta.
- Electromotive Force: The energy per unit charge provided by an electrical source, such as a battery or generator.
See Also
External links
- Medical encyclopedia article on Electric potential
- Wikipedia's article - Electric potential
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