Question

A bar magnet, its magnetic field lines, and multiple compasses that show the direction of the magnetic field are all shown below.



If a compass were placed at the spot labeled X, what would be its orientation?
A.

B.

C.

D.

Answer 1

I can’t see the diagram you’re referring to. Could you upload the image (or describe where X is relative to the magnet and the poles and the nearby field lines)? Then I’ll pick the correct letter.

In the meantime, here's the rule you should use to choose:
- A compass needle aligns tangent to the magnetic field at that point.
- Outside a bar magnet, field lines run from the magnet’s north pole to its south pole. (Inside the magnet they run S → N.)
- The compass’s north-seeking end (usually the red end) points in the direction of the field line.

So find the field line through X and choose the option showing the needle tangent to that line and pointing from N toward S. If you tell me which pole is left/right and where X is, I can give the exact letter.