The concept of electrical power is defined as the amount of electrical work performed in the unit of time. Since electric power is a greatness, it can be measured. Its basic unit is Watt (W). It is quite common to find in equipment that transform electrical energy into mechanical energy the representation of power measurement in HP (Horse Power) or CV (Horse Steam).
1 CV = 736W
1 HP = 746 W
Mathematically we can obtain the values of power in electrical circuits from the following fundamental expression:
At where:
P = Electrical Power in Watt
U = Voltage in Volts
I = Current Ampère Current