Question

Which of the following best describe magnetic field line?

• A. It represents the direction of the magnetic field
• B. It represents the strength of the magnetic field
• C. It represents the direction of the magnetic field force
• D. It intersects other magnetic field lines
• E. It points away from the south pole and toward the north pole

Answer 1

Answer: (A)

It represents the direction of the magnetic field

Note:

1. Magnetic field lines are imaginary lines that are used to represent the direction of magnetic field by the tangent at a point.
2. Magnetic field lines run from north pole to south pole outside the magnet and from south pole to north pole inside the magnet.
   
3. Magnetic field line never intersect.
4. Density of the magnetic field lines in the space represent the strength of the magnet.

Here option A is correct.