What happens to the magnetic field around an electromagnet when you reverse the current flowing through the wire?

Question

nothing happens

the magnetic poles reverse

the electromagnet gets stronger

Answer 1

When you reverse the current flowing through an electromagnet, the magnetic poles reverse. This means that the North and South poles of the electromagnet switch places. The strength of the magnetic field can remain the same if the current magnitude is unchanged, but its direction will be reversed. So, the correct answer is:

the magnetic poles reverse.