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Coil
A temporary magnet made of a wire coil through which an electric current passes
electromagnet: A temporary magnet consisting of an iron or steel core wound with a coil of wire, through which a current is passed. What are made by p...
Number of coils of wire around the nail
What is the effect of number of coils of wire around the nail?How does the number of coils affect an electromagnet?What is this coil of wire around t...