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An electric bulb has power 500 watt. what does it means​
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An electric bulb has power 500 watt. what does it means​

User Raymie
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Answer:

The bulb consumes electrical energy at the rate of 500 Watts

1 Watt = 1 Joule/sec where the joule is the unit of energy

Electric energy is often expressed in kw-hrs

This means that 1 kilowatt of power is used for 1 hour

1 kw-hr = 1000 joules/sec * 3600 sec = 3.6E6 joules of energy

User Dawnette
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