Question

What is the S.I. unit of electrical power?

Answer 1

Hint: Electric power is the rate at which electrical energy is transmitted by an electric circuit per unit of time. The watt, or one joule per second, is the SI unit of power. Electric generators are the most common source of electricity, however other sources such as electric batteries can also be used. The electric power sector often provides it to companies and residences (as residential mains electricity) via an electric power grid.

Complete answer:
Electric power, like mechanical power, is the rate at which work is completed, measured in watts and symbolised by the letter P. Wattage is a slang word that means "electric power in watts." The electric power in watts generated by an electric current I with a charge of Q coulombs flowing through an electric potential (voltage) differential of V every t seconds is,
\[P = {\text{work done per unit time}} = \dfrac{W}{t} = \dfrac{W}{Q}\dfrac{Q}{t} = VI{\mkern 1mu} \]
where Q is the electric charge in coulombs.
t denotes the amount of time in seconds.
I stands for amperes, which is the unit of electric current.
V stands for voltage or electric potential in volts.
When electric charges pass across an electric potential difference (voltage), which happens in electrical components in electric circuits, they are converted to various kinds of energy. Watt, or joule per second, is the SI unit of electric power.
It is the initial step in the supply of energy to customers for electric companies. The electric power business is usually in charge of the other operations, such as electricity transmission, distribution, and electrical energy storage and recovery utilising pumped-storage techniques.

Note: Electromechanical generators, driven by heat engines fueled by combustion, geothermal power, or nuclear fission, are used to create electricity in power plants. The kinetic energy of flowing water and wind is used to power other generators. Many additional technologies, such as photovoltaic solar panels, are utilised to create power.