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1. Electricity
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Q12 of 330 Page 58

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

One watt is defined as the amount of electrical energy consumed by electrical appliances at the rate of 1 joule per second.

1 watt = 1 volt x 1 ampere


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10

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11

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13

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

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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.

Questions · 330
1. Electricity
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