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The volt-ampere (SI symbol: VA, [1] sometimes V⋅A or V A) is the unit of measurement for apparent power in an electrical circuit. It is the product of the root mean square voltage (in volts) and the root mean square current (in amperes). [2] Volt-amperes are usually used for analyzing alternating current (AC) circuits.
ampere square meter per kilogram: A⋅m 2 /kg A⋅m 2 ⋅kg −1: See also. SI; Speed of light; List of electromagnetism equations; References
Media related to Ampere's law at Wikimedia Commons; MISN-0-138 Ampere's Law by Kirby Morgan for Project PHYSNET. MISN-0-145 The Ampere–Maxwell Equation; Displacement Current (PDF file) by J. S. Kovacs for Project PHYSNET. A Dynamical Theory of the Electromagnetic Field Maxwell's paper of 1864
In the power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity. . Calculations are simplified because quantities expressed as per-unit do not change when they are referred from one side of a transformer to t
Kvar or KVAR may refer to: Kvar, a character from the video game Tales of Symphonia; Kilovolt-amperes reactive, thousand Volt-ampere reactive, a unit of reactive power; KVAR (FM), a radio station (93.7 FM) licensed to Pine Ridge, South Dakota; KPNX, a television station (Channel 12) licensed to Mesa, Arizona, which formerly used the call sign KVAR
kVA—One thousand volt Ampere (measurement) kvar—one thousand vars (measurement) kW—Kilowatt (one thousand watts) (measurement) kWE—kilowatt electric (measurement) kWh—Kilowatt hour (one thousand watt hours) (measurement)
Angle notation can easily describe leading and lagging current: . [1] In this equation, the value of theta is the important factor for leading and lagging current. As mentioned in the introduction above, leading or lagging current represents a time shift between the current and voltage sine curves, which is represented by the angle by which the curve is ahead or behind of where it would be ...
The best-known and simplest example of Ampère's force law, which underlaid (before 20 May 2019 [1]) the definition of the ampere, the SI unit of electric current, states that the magnetic force per unit length between two straight parallel conductors is