Electromagnets Flashcards
Magnets
An object that produces a magnetic field
What is magnetism
The force produced by magnets
Magnetic field
The area around a magnet where there is a magnetic force
What are poles?
Two opposite ends of a magnet.
Force
An interaction that will change the motion of a object.
What is a compass
A device with a magnetized needle that points to earths magnetic north pole.
Meaning of repel
A force that pushes an object away from itself
Attract meanibg
Instance where a force pulls an object towards itself
How do you know if something is magnetic
The domain lines will be in the same direction
How to magnise something
To magnitise something you rub a magnet along the metal in the same direction
How to demagnitisde a magnet
Hit it with a hammer so the domain will become non uniform
Which three metals are magnetic
Iron
Nickel
Cobolt
what is a coil?
insulated wire wrapped around a core.
what is current?
Flow of electrons
