P15 Flashcards
What is an example of a non-contact force?
Attraction and repulsion between two magnetic poles
What are the two types of magnets?
Permenant or induced
What are permenant magnets?
Produce their own magnetic field
What are induced magnets?
Magnetic materials that turn into a magnet when put in a magnetic field
What are some examples of magnetic materials?
Iron,steel,nickel,cobalt
What is the force between induced and permenant magnets?
Attractive
What happens when induced take away magnetic field?
Lose magnetism
What happens when you put two magnets of pole near each other?
Exert a force on each other
What happens when two poles are the same?
They repel each other
What happens to two unlike poles?
They attract each other
Whats the magnetic field?
A region where other magnets or magnetic materials experience a force
What does the strength of the magnetic field depend on?
The distance from the magnet (strongest at the poles)
How is the direction of the magnetic field given?
Direction of the force that would act on another north pole.
What doees a magnetic field contain?
A bar magnet
How does a compass work?
Earth has a magnetic field and the compass points to the magnetic field
What happens when a current flows through the wire?
A magnetic field is created around the wire
What does the strength of the magnetic field depend on?
- Current of wire and distance
How can you increase the strength of a magnetic field?
Wrap the wire in Solenoid
How is the magnetic field in the solenoid?
Strong and uniform
How can solenoid increase magnetic field?
The field lines around each loop line up with each other. Closer the feild lines stronger they are