Question

Inside a bar magnet, the magnetic lines of force

• A. are from S-pole to N-pole of the magnet
• B. do not exist
• C. depend upon area of cross-section of bar magnet
• D. are from N-pole to S-pole of the magnet

Hint:

Magnetic field lines always form closed loops: outside the magnet N to S, inside the magnet S to N.

Answer 1

The Correct Option is A

Step 1: Understand the nature of magnetic field lines.
Magnetic field lines always form closed continuous loops. They never start or end at any point.

Step 2: Direction of magnetic field lines outside the magnet.
Outside a bar magnet, magnetic field lines emerge from the North pole and enter the South pole.

Step 3: Direction of magnetic field lines inside the magnet.
To complete the closed loop, inside the magnet the magnetic field lines go from the South pole to the North pole.

Step 4: Final conclusion.
Hence, inside a bar magnet, magnetic lines of force are directed from S-pole to N-pole.