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Card 16

Front

Name the top three factors that will make an electromagnet stronger

Back

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Card 17

Front

Which could be stronger: permanent magnets or electromagnets?

Back

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Card 18

Front

What kind of magnet might be used to levitate a train?

Back

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Card 19

Front

What is a relay?

Back

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Card 20

Front

True or false: drivers use a relay/electromagnetic switch to turn on the engines in cars

Back

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Card 21

Front

True or false: aluminium will be attracted to an electromagnet

Back

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Card 22

Front

True or false: an electromagnet can make a motor

Back

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Card 23

Front

How are objects charged positively or negatively?

Back

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Card 24

Front

What is an electric field?

Back

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Card 25

Front

What is electric current?

Back

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