Magnetism

how many pole does a magnet have

A magnet has two poles, a north and a south pole

What poles attract

North poles attracts south poles

South poles attracts north poles

What poles repel

South poles repel south poles

North poles repel north poles

What happens to magnetic materials

Magnetic materials will experience a magnetic force when placed near a magnet, this is a type of non-contact force as the materials do not have to touch for the force to be apparent

What are three magnetic metals

The three magnetic metals are iron, nickel and cobalt

How are electromagnets made

Electromagnets are made by wrapping a coil or wire around a magnetic core

when do electromagnets work

electromagnets only work when electricity is flowing through the coil, which means that they can be turned on and off

Are electromagnets stronger then regular magnets

Electromagnets are stronger than permanent magnets

What magnetic field shape will a electromagnet make

The electromagnet will produce the same shape as a bar magnet

How can you increase the strength of a bar magnet

You can increase the strength of an electromagnet by

Increasing the number of turns on the coil around the core or electromagnet

Increasing the current which is flowing through the coil of wire

Using a more magnetic material for the core for example iron rather then aluminium