Electrical power is expressed in watts or in jouls per second
Another Answer
There is no such thing as 'electrical power'. Power is simply a rate: the rate of doing work. Power can be measured in watts (in the SI system) or in horsepower (in the Imperial system). There is no reason why the power of a heater can't be measured in horsepower or the power of a car can't be measured in watts.
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Electrical power is also measured in Watts.
Watts = Amps x Volts.
Its 'true power', expressed in watts, will be zero, while its 'reactive power', expressed in reactive volt amperes, will be the product of the voltage across the inductor and the current through it.
400 watts
60 Watts is the amount of electrical power the bulb uses when it is switched on.