A student uses two compass needles to investigate the magnetic field around a bar magnet. Which of the following diagrams show the correct directions of the needles?
Attached Figure / Diagram
A
A
B
B
C
C
D
D
Verified Correct Answer: B.
Physical Principles & Numerical Solution
By convention, the field direction is taken to be outward from the North pole and in to the South pole of the magnet. Also, they form closed lines.
Source: Myschool Past Questions Archive (Record #49876)