Physics P1.3

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What does power mean?
Rate of energy transfer.
1 of 6
What is the equation to find power?
Power = energy / time
2 of 6
Which 2 factors does the amount of energy supplied to an appliance depend on?
1. how long it's used for 2. the power supplied to it
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How's the total cost of the electricity used in the home calculated from its reading?
total cost = number of kWh used * cost per kWh
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What does the term 'cost-effective' mean?
Getting the best value for money.
5 of 6
What is meant by the 'payback time' of insulation?
Home owners install extra insulation to reduce heat loss and save money.
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Other cards in this set

Card 2

Front

What is the equation to find power?

Back

Power = energy / time

Card 3

Front

Which 2 factors does the amount of energy supplied to an appliance depend on?

Back

Preview of the front of card 3

Card 4

Front

How's the total cost of the electricity used in the home calculated from its reading?

Back

Preview of the front of card 4

Card 5

Front

What does the term 'cost-effective' mean?

Back

Preview of the front of card 5
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