Question

What is electrical power. Give its unit. Explain how the electricity consumed by an electrical appliances be calculated. ​

Answer 1

If you use 1000 watts or 1 kW of power for 1 hour then you consume 1 unit or 1 kilowatt-hour of electricity

Explanation:

Electrical power is the rate of doing work, measured in watts, and represented by the letter P. The term wattage is used to mean "electrical power in watts produced by an electric current I consisting of a charge of Q coulombs every t seconds passing through an electric potential difference of V is     P = $\frac{VQ}{t}$ = VI

Electrical consumed  

Electrical Energy = Power x time. The total amount of electrical energy used depends on the total power used by all electrical devices and the total time used in home. one killowatt hour is equal  to 1000 watts of power used for one hour of time.