What is the direction of magnetic field lines outside a bar magnet?

Subject: General Science

Topic: Magnetic Effects of Electric Current

Options:

1. Option A: From south pole to north pole
2. Option B: From north pole to south pole
3. Option C: From east to west
4. Option D: From west to east

Correct Answer:

Option B: From north pole to south pole

Explanation:

By convention, magnetic field lines emerge from the north pole and merge at the south pole outside the magnet. Inside the magnet, the direction is from south to north.