VA measures apparent power in electrical circuits. VA equals root mean square voltage multiplied by current. VA is dimensionally equivalent to watt (1 V⋅A = 1 W). VA is used for AC circuits, DC circuits use real power
Electricity powers all modern technology from kitchen appliances to NASA rockets. Current comes in two types: DC (constant direction) and AC (50/60 Hz). Voltage measures electric potential difference between points. Power is defined as current multiplied by voltage
Apparent power combines active and reactive power in alternating current systems. It is measured in volt-amperes (VA) and calculated as square root of active/reactive power squares. Complex apparent power uses real (P) and imaginary (j) parts: S = P + jQ
True power is the actual power dissipated in a circuit, measured in watts (P). Reactive power is the phantom power dissipated by reactive loads, measured in VAR (Q). Apparent power combines true and reactive power, measured in VA (S)
VA measures power in direct current (DC) circuits. VA equals watts in DC circuits. Voltage represents electric potential difference. Current is measured in amperes
Electrical load is anything that consumes electric power. Three main types: resistive, inductive, and capacitive