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Investigation to find out relationship between the current in the coil and the force on the iron disc

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Electromagnets are made of coils of wire with electricity passing through them. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet.

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A second experiment can be carried out to investigate how the strength of the electromagnet ... Check that the current is still 0.5 A and repeat the paper clip reading. ... Repeat this process increasing the number of turns by 10 up to 60 coils.

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