Question

A bar magnet is immersed in a heap of iron filings and is pulled out. The amount of iron filings stuck to the_______.

• A. North pole is almost equal to the South pole
• B. magnet will be same all along its length
• C. North pole is much less than the South pole.
• D. North pole is much more than the South pole.

Answer 1

The correct option is A North pole is almost equal to the South pole

The strength of the magnetic force at the poles is greater than the strength of the magnetic force along the magnet. Hence, the number of iron filings clinging at the poles will be greater than that along the length of the magnet.

The number of iron filings clinging to the North pole is almost equal to the South pole because, in a magnet, the strength of both the poles is same.