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1. Electricity
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Q13 of 330 Page 58

Define watt-hour. How many joules are equal to 1 watt-hour?

The amount of electrical energy consumed by an electrical appliance of 1 watt power for 1 hour is called watt-hour.

1 watt hour is equal to 3600 joules


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12

Define watt. Write down an equation linking watts, volts and amperes.

14

How much energy is consumed when a current of 5 amperes flows through the filament (or element) of a heater having resistance of 100 ohms for two hours? Express it in joules.

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Questions · 330
1. Electricity
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