Which statement about an electromagnet is true? a. it doesn’t function without a source of current. b. the core is made from a nonmagnetic material. c. it uses moving magnets to create an electric field. d. it creates a permanent and strong magnetic field.

The true statement about an electromagnet is that it  doesn't function without a source of current.

An electromagnet is referred to a type of magnet which has a magnetic field that is generated as a result of the flow of electric current passing through it.

This type of magnet is a mere object but when electric current is passed, a

magnetic field is formed which confirms that the statement about it not being

able to function without a source of current.

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An electromagnet is only magnetic when there's electric current flowing through its coils (A).  When there's no current flowing through it, it just lays there like a lump of iron with wire wound around it.  

i don't know that i agree with that but what's the question ?

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