A torch bulb is rated at 2.5V, 500 A. Find the power and resistance.

22 Define electric Power. What is its unit? 23 An electric bulb is rated at 220V, 200W. What is its resistance? 25 What is the S.I. unit of Power? 26 A heater coil connected to a 220 V ha a resistance of 150Ω . How long will it take for this coil to heat 1 kg of water from 20^o C to 60^o C, assuming that all the heat is taken up by the water?