出典:Wikipedia
出典:『Wikipedia』 (2011/05/19 17:39 UTC 版)
In classical electromagnetism, the electric potential (denoted by φ, φE or V; also called the electrostatic potential) at a point in space is the electric potential energy divided by charge associated with a static (time-invariant) electric field. Typically measured in volts, the electric potential is a scalar quantity equivalent to a joule per coulomb.
電力.
the power of electricity
電流.
静電気.
the effluence of electricity