Magnetism and electromagnetism

Where are the magnetic forces strongest on a magnet?

The poles

What happens when two like poles are near each other?

They repel.

What happens when two unlike poles are near each other?

They attract.

What type of force is attraction and repulsion between two magnetic poles?

Non-contact force.

What is the difference between induced and permanent magnets?hello

Permanent magnets produce their own magnetic field, while induced magnets only become magnetic when placed inside a magnetic field

What force does induced magnetism always cause?

A force of attraction.

What happens to an induced magnet when removed from the magnetic field?

An induced magnet loses most/all of its magnetism quickly.

What is a magnetic field?

The region around a magnet where a force acts on another magnet or on a magnetic material (iron, steel, cobalt and nickel)

What does the strength of the magnetic field depend on?

- The distance from the magnet.

- How powerful the magnet is

How is the direction of the magnetic field at any point defined?

It's given by the direction of the force that would act on another north pole placed at that point.

What is the direction of a magnetic field line?

From the north pole of a magnet to the south pole.

What does a magnetic compass contain?

A magnetic compass contains a small bar magnet.

What happens when a current flows through a conducting wire?

A magnetic field is produced around the wire.

What does the strength of the magnetic field around a wire depend on?

The current through the wire and the distance from the wire.

How can you increase the strength of the magnetic field created by a current in a wire?

Shaping a wire to form a solenoid