magnetism and electromagnetism Flashcards
At which part of a magnet are the magnetic forces strongest
The poles of the magnet
What happens when to magnets are close to eachother
They exert a force on eachother .
What type of force is exterted if two like poles of a magnet are brought near each other
a repulsive , non-contact force
What type of force is exterted if two unlike poles of a magnet are brought near eachother
an attractive, non- contact force
What is the difference between a permanant magnet and induced magnet
. A permanent magnet produces its own magnetic field
. an induced magnet becomes magnetic when placed in a magnetic field
What type of force does induced magnetism always cause
A force of attraction
What happens when an induced magnet is removed from a magnetic field
The induced magnet loses its magnetism
What is a magnetic field
the region around a magnet where a force acts upon another magnet or magnetic material
Guve four examples of magnetic materials
.Iron
.Cobalt
.Nickle
.Steel
What can be said about the force between a magnet and magnetic material
It is always attractive
How does the strength of a magnetic field alter as you move further away from the magnet producing it
The magnetic field strength decreases , the further you move away.
What direction does a magnetic field point
from the north pole to the south pole
What does a magnetic compass contain
. A small bar magnet that points in the direction to the earths magnetic field
What is produced when current flows through a conducting wire
. A magnetic field is produced around the wire
What determines the strength of the magnetic field around a current carrying wire
. The magnitude of the current flowing through the wire
. the distance from the wire
