The total amount of power that must be delivered to a load to enable it to work. This includes the real power (useful power which does the work) and the reactive power (overhead, but necessary). Apparent Power = Real Power + Reactive power. Example: the Apparent Power necessary to turn a motor at a specific speed and torque consists of the Real Power (contributes to speed and torque) and the Reactive power (energizes the motor coil, but does not contribute to speed or torque). Apparent power is calculated by multiplying current times voltage. (Note that if the load is resistive, true power factor is unity and the apparent power equals the real power. If the true power factor is less than unity, apparent power will be greater than real power.) (see: Voltamp; Current; Watt; Power Factor; Real Power; Reactive Power.)