How does the north pole of a magnet respond to the poles of other magnets?

It attracts the south pole and repels the north pole.

Explanation:

Parallel poles always repel, and opposite poles will always attract

A magnet has a magnetic field around it which originates at the north pole and enters through the south pole.

In a magnet, like poles will repel each other and unlike poles will attract.

The north pole of one magnet will repel another north pole of another magnet. North pole of one magnet will attract the south pole of another magnet. This is the law of attraction and repulsion of magnet.