Which factors affect the strength of an electromagnet? Check all that apply. the direction of the current flowing through the wirethe amount of current flowing through the wirethe number of coils in the wirethe material of the wirethe material of the core

An electromagnet becomes stronger when more current flows through its wire and when the wire has more coils. The core material also matters: a magnetic core, such as iron, can strengthen the magnetic field. Reversing the current changes the electromagnet’s poles, not its strength, and the wire’s material is not a direct strength factor.

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