electromagnetism Flashcards
what is a magnetic field
the region surrounding a magnet where another magnet experiences a non-contact force
what is produced when current flows through a conducting wire?
A magnetic field is produced around the wire
how do you work out the direction if the field around a current carrying wire?
use the right hand grip rule
how do you increase the strength of the magnetic field round a current-carrying wire?
- magnitude of current flowing through wire
- coils around wire
- distance from wire
what is a solenoid
a coil of wire which creates a strong magnetic field
when current passes through
describe the magnetic field found inside a solenoid
strong and uniform
what even is an electromagnet
a solenoid with an added iron core.
what is the motor effect
a force between a magnetic field and a current carrying conductor placed in that field
what is magnetic flux density?
strength of the magnetic field
