What is Magnetism?
The attraction or repulsion of magnetic materials.
What is magnetism?
Two ends of a magnet, no matter its shape
What is a pole
This is a device with a magnetized needle that can spin freely.
What is a compass?
A current carrying coil with many loops is call this.
What is a solenoid?
Electric current produces this
magnetic field
A magnet is attracted to a soup can because the can has
iron in it.
What is a magnet
any material that attracts iron and materials that contain iron
A compass points toward here on the Earth
What is geographic north and magnetic south?
Solenoid with ferromagnetic core.
What is an electromagnet?
A maglev train floats above its rails due to
repulsion of the similar poles between magnets in the bottom of the train and in the guideway
This is the part of a magnet where magnetic force is the strongest.
What are poles?
Attraction or repulsion of magnetic materials
Magnetism
How is earth like a magnet?
earth has a magnetic field around it and two magnetic poles
The relationship between magnetism and electricity.
What is electromagnetism?
A material with strong magnetic properties
farromagnetic material
A north pole is brought near a north pole.
What is repulsion?
What is a magnetic force
attraction or repulsion of magnetic poles
What are the magnetic field lines
map out the invisible magnetic field around a magnet , spread out from one pole, curve around the magnet and return to the other pole.
The magnetic field produced by a current can be changed by
1) turning it on or off
2) reversing its direction
3) changing its strength
A complete path through which electric charges can flow.
What is circuit?
The region of magnetic force around a magnet.
What is a magnetic field.
What are the properties of magnets
1) attract iron and materials that contain iron
2) attract or repel other magnets
3) one end will always point not when allowed to swing freely
the angle between the geographic North Pole and the magnetic North Pole of the earth
Magnetic declination
How to increase the strength of an electromagnet
1) Add more coils to the solenoid
2) wind coils closer together
3) Increase the current (adding batteries)
4) use a material that is more magnetic than iron
A material through which an electric current cannot move freely.
What is an insulator?