8.3 Forces at a Distance

Front

What happens when two opposite poles of magnets are put together?

Back

They attract each other.

Front

What is the use of a magnet in a compass?

Back

To show directions.

Front

What is an electromagnet?

Back

A type of magnet where the magnetic field is produced by an electric current.

Front

What direction does the magnetic force point?

Back

Out of north, into south.

Front

What happens when two like poles of magnets are put together?

Back

They repel each other.

Front

Define magnetic force.

Back

The attraction or repulsion that arises between electrically charged particles due to their motion.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet maintains its magnetic properties, while an electromagnet's magnetism can be turned on and off.

Front

What is the role of magnetic fields in electric motors?

Back

They interact with electric currents to produce motion.

Front

What is the principle of magnetic attraction?

Back

Opposite poles attract each other, while like poles repel.

Front

How do magnets affect compass needles?

Back

Compass needles align with the Earth's magnetic field, pointing towards magnetic north.