Question

Which part of the bar magnet would pick up most iron filings? Why?

Answer 1

Answer:

The closer together the field lines are, the stronger the field. As you can see the field is very strong in the centre of the magnet, but because they are mostly contained in the magnet itself, the field is very weak in the air near the centre.

Explanation:

Answer 2

Answer:

The two ends of the bar magnet.

Explanation:

Since iron is a ferromagnetic material, a magnetic field induces each particle to become a tiny bar magnet. The south pole of each particle then attracts the north poles of its neighbors, and this process repeated over a wide area creates chains of filings parallel to the direction of the magnetic field.