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InterviewSolution
| 1. |
Define electric power and electric charge ? |
| Answer» Electric power : SI unit of electric power is watt (W).1W = 1 volt x 1 ampere = 1V x 1A1 kilo watt or 1kW = 1000 WConsumption of electricity (electric energy) is generally measured in kilo watt.Unit of electric energy is kilo watt hour (kWh)1 kWh = 1000 watt X 1 hour = 1000 W x 3600 sOr, 1kWh = 3.6 x 106 watt second = 3.6 x 106 JElectric charge : If a net electric charge (Q) flows through a cross section of conductor in time t, then; I = Q/tSI unit of electric charge is coulomb (C).One coulomb is nearly equal to 6 x 1018 electrons. | |