Electrical Energy GCSE Physics AQA (higher)

test that i have made on nearly every sentence in P1a.3 in the AQA physics revision guide

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Electrical energy is energy transfer due to...
an electric current
1 of 14
What is the power of the device?
the rate at which it transforms energy
2 of 14
What is the Unit of power?
Watts
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1 Watt =
1 Joule
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1 Kilowatt =
1000 watts
5 of 14
Energy transferred =
power of device x time
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total cost of electricity =
number of kWh x cost per kWh
7 of 14
What is Kilo-watt energy a unit of?
energy
8 of 14
What is the national grid?
a connection of cables and transformers
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Where do we use step-up transformers?
at the start of the grid
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Where do we use step-down transformers?
at the end of the grid before the houses
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Why do we use step-up transformers?
To reduce energy loss
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Why do we use step-down transformers?
To make it safer in our homes
13 of 14
What voltage is supplied to homes?
230v
14 of 14

Other cards in this set

Card 2

Front

What is the power of the device?

Back

the rate at which it transforms energy

Card 3

Front

What is the Unit of power?

Back

Preview of the front of card 3

Card 4

Front

1 Watt =

Back

Preview of the front of card 4

Card 5

Front

1 Kilowatt =

Back

Preview of the front of card 5
View more cards

Comments

:) PurpleJaguar (: - Team GR

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Another really helpful quiz from you! thanks :)

But for the last question the answer is 230V not 230kV :P

kotriux

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kilo-watt is a measure of power not energy. energy is measured in joules. apart from that its really helpful and good. :)

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