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Card 16
Front
Name the top three factors that will make an electromagnet stronger
Back
Card 17
Front
Which could be stronger: permanent magnets or electromagnets?
Back
Card 18
Front
What kind of magnet might be used to levitate a train?
Back
Card 19
Front
What is a relay?
Back
Card 20
Front
True or false: drivers use a relay/electromagnetic switch to turn on the engines in cars
Back
Card 21
Front
True or false: aluminium will be attracted to an electromagnet
Back
Card 22
Front
True or false: an electromagnet can make a motor
Back
Card 23
Front
How are objects charged positively or negatively?
Back
Card 24
Front
What is an electric field?
Back
Card 25
Front
What is electric current?
Back
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