Dictionary
Watt
A watt is the power used when one volt causes one ampere to flow in a circuit. Note that the electrical power in any part of a circuit is equal to the current in that part multiplied by the voltage across that part of the circuit.
Watts is also referred to ac power, and power is the amount of work done in a given time. One watt is the amount of energy required to lift 44.26 pounds, one foot, in one minute.
With ac measurements, effective power (measured in Watts) equals the product of voltage, current, and power factor (the cosine of the phase angle between the current and the voltage). Watts=EI cosine(Theta).
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