6.7 Magnetism and Electromagnetism Flashcards
(13 cards)
Attraction
Opposite poles will experience a force of attraction, meaning they will experience a force towards each other
The force between a magnet and magnetic material is always one of attraction
Current-Carrying Wires
When current flows through a wire, a magnetic field is generated around it
The strength of the field is dependent on the magnitude of the
current and the distance from the wire
Electromagnet
A solenoid with an iron core
Induced Magnet
A material that becomes a magnet when it is placed in an
existing magnetic field, but loses its magnetism quickly once it is removed
Induced magnetism always produces attractive forces
Magnetic Compass
A device containing a small bar magnet that points in the
direction of the Earth’s magnetic field
Magnetic Field Lines
Lines representing the strength and direction of a magnetic
field
The field line direction at any point is in the direction that a force would act on another north pole if placed at that point
Magnetic Field
The region around a magnet in which another magnet or
magnetic material will experience a force
Magnetic Materials
Iron, steel, cobalt and nickel
Magnetic Poles
The regions of a magnet where the magnetic forces are at their strongest
Permanent Magnet
A magnet that produces its own magnetic field
Repulsion
Like-poles will experience a force of repulsion, meaning they will
experience forces in opposite directions
Solenoid
A wire wrapped into the shape of a coil, that has a strong and uniform magnetic field inside of it
The solenoid’s magnetic field strength can be increased by adding an iron core
Tesla
The unit of magnetic flux density
