DNT Flashcards
Permanent Magnets
Keep their magnetism for an indefinite period of time.
Temporary Magnets
Lose their magnetism quickly.
Poles
The ends of a magnet where the magnetism is the strongest.
Magnetic Feild
The space in which the magnetic effect is felt.
Keepers
Iron bars that are placed between magnets to preserve the magnetic strength by providing paths for magnetic field lines between opposite poles.
What type of magnet is the earth?
Permanent
What is an electromagnet?
Where is used?
- A temporary magnet that can be switched on and off.
- Metal recycling processes to move iron and separate to magnetic from non-magnetic material.
What is a solenoid?
A coil of wire (cylindrical) that forms a magnetic field when an electric current flows through it.
Conductor
A material that is used to carry electricity through an electric circuit.
E.g Wire
Electric Energy
The energy that flows through an electric circuit.