Output is the term used in electrical technology for the product of voltage and current. For direct current, P = U · I applies, with the unit Watt (W).[1] For alternating current, U · I is the apparent power S, with the unit volt-ampere (VA); the active power is P = U · I · cos φ, given in Watts.[2]
References
- Herbert H. Netzel: Induktionsofenhandbuch. 3rd edition, Eigenverlag IES, Witten 2003, p. 133.
- The Engineering ToolBox: AC – Active, Reactive and Apparent Power. Accessed 27 August 2026.