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

User Eel GhEEz
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Answer:

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.

Step-by-step explanation:

User Twaggs
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