Answer:
The rate at which the energy of a system is transformed
Explanation:
Power is the rate at which energy of a system is transformed or the rate at which work is done. It is defined by Power = Workdone/time taken
Its unit is the Watt denoted by the letter W.
For example, assuming a work of 200 J is done in 10 s, then Power, P equals
P = workdone/time taken = 200 J/10 s = 20 J/s = 20 W
The are is called a magnetic field.