Question

What is Electrical Energy and Power?

Answer

Electrical Energy and Power - The electrical energy produced in a conductor of resistance R, having current I in time t is = I²Rt = V²t/R. SI unit of electrical energy is joule (J). The electrical power is the electrical energy produced in unit time = I²R = V²/R = VI Thus, the electrical power is the product of voltage and current. Its SI unit is watt = J/s = watt (W) Other units of power 1kW = 10³ W, 1 HP = 746 W