Question

What is the main difference between a permanent magnet and a temporary magnet?

A permanent magnet is made of a ferromagnetic material, while a temporary magnet is not.
A temporary magnet attracts only metal objects, while permanent magnets attract both metal objects and other magnets.
The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment.
There are domains in a permanent magnet, but not in a temporary magnet.

Answer 1

The main difference between a permanent magnet and a temporary magnet is that the domains in a temporary magnet easily lose their alignment, while the domains in a permanent magnet maintain their alignment.

To clarify:

- **Permanent magnets** are made from materials that can retain their magnetic properties over time. The magnetic domains in these materials are aligned in a uniform direction, which gives the magnet its persistent magnetic field.

- **Temporary magnets** are usually made from ferromagnetic materials that can become magnetized in the presence of a strong magnetic field but will lose their magnetism when the external field is removed. The magnetic domains in temporary magnets can quickly lose their alignment, causing them to lose their magnetic properties.

So, the correct distinction is related to domain alignment and retention of magnetic properties, making the third statement accurate: "The domains in a temporary magnet easily lose alignment, but the domains in a permanent magnet keep their alignment."