Define electric power
Answers
Electric power is transmitted by overhead lines like these, and also through underground high-voltage cables.
Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
Electric power is usually produced by electric generators, but can also be supplied by sources such as electric batteries. It is usually supplied to businesses and homes (as domestic mains electricity) by the electric power industry through an electric power grid.
Electric power can be delivered over long distances by transmission lines and used for applications such as motion, light or heat with high efficiency.[1]
Definition Edit
Electric power, like mechanical power, is the rate of doing work, measured in watts, and represented by the letter P. The term wattage is used colloquially to mean "electric power in watts." The electric power in watts produced by an electric current I consisting of a charge of Q coulombs every t seconds passing through an electric potential (voltage) difference of V is
{\displaystyle P={\text{work done per unit time}}={\frac {VQ}{t}}=VI\,} P={\text{work done per unit time}}={\frac {VQ}{t}}=VI\,
where
Q is electric charge in coulombs
t is time in seconds
I is electric current in amperes
V is electric potential or voltage in volts
ELECTRIC POWER;
Electricity is the set of physical phenomena associated with the presence and motion. Electric power is the rate per unit time, at which electrical energy is transferred by an electric currect. The SI unit of electric power is Watt, i.e. one joule per second. Electric power is usually produced by electric generators, but can also supplied by sources such as electric batteries, etc.