Home Preparation for National Talent Search Examination (NTSE)/ Olympiad
Chapter : 1. Electricity
Electrical Power
Electrical Power : The rate of loss of energy in an electrical circuit is called electrical power. It is denoted by'P' p = = I2 R = IV = units of power = joule/sec, watt, horse power 1 watt = 1 joule/sec, 1 HP = 746 watt unit of electrical energy = watt second, kilowatt hour 1 kilowatt hour (kwh) = 3.6 x 106 Joule