which is an important step in how an electric motor uses magnetic force to produce motion?\nas the north…

which is an important step in how an electric motor uses magnetic force to produce motion?\nas the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then attract.\nas the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.\nas the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then repel.\nas the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then attract.

which is an important step in how an electric motor uses magnetic force to produce motion?\nas the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then attract.\nas the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.\nas the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then repel.\nas the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then attract.

Answer

Brief Explanations:

An electric motor works based on the principle that like - poles repel and opposite - poles attract. When the north pole of the electromagnet approaches the north pole of the permanent magnet (like - poles), repulsion occurs. To keep the rotation going, the current reverses. Reversing the current changes the polarity of the electromagnet. So, the poles of the magnets then attract (as the reversed - polarity electromagnet now has a south pole near the permanent magnet's north pole).

Answer:

As the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then attract.