1. If we look at the bulbs used in our home, we will notice that they are marked in watts 25 W, 40W, 60W, 100W.
2. The wattage measures how ‘powerful’ the bulb is.
3. The brighter the bulb, the higher its wattage and the more the electricity used by it.
4. 1 kilowatt (KW) is 1000 watts (W).
5. When any appliance of 1 Kilo Watt is used for one hour, it uses up one Kilo Watt – hour (KWH) or ‘one unit’ of electricity.
6. If it runs for two hours it will use up two units of electricity.
