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Electrical current is measured in amperes.
Power (P) = Voltage (V) x Amperage (I) Written as P=VxI or to find Voltage V=P/I Voltage is measured in Volts (V) Amperage is measured in Amperes (Amps or A) Power is measured in Watts (W)
VA or, more correctly, V.A, is the symbol for volt amperes, which is the unit of measurement for the apparent power of an alternating-current load.In A.C. circuits, true power (measured in watts) is a measure of the rate at which energy is supplied to the load, and reactive power (measured in reactive volt amperes) is a measure of the rate at which energy is alternately stored in the circuit's magnetic field and returned to the supply. Apparent power is the name given to the vector sum of true power and reactive power.
An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A), hence the name
Electric current is measured in amperes. 1 ampere = 1 coulomb/second