Magnetism Flashcards
what is a magnetic field
region where other magnets / magnetic materials experience a force
where do magnetic fields go and what do they show
north to south
if closer together, stronger magnetic field
where is magnetic field strongest and what does it show
at poles meaning magnetic forces are also strongest at poles
what is a permanent magnet
A permanent magnet that will produce its own magnetic field
what induced magnet
When a magnetic material is placed in a magnetic field, the material can temporarily be turned into a magnet.
what does magnetic induction explain
that forces between magnets and a magnetic material is always attractive as the south pole of the magnet induces the north pole of material
what does the quickness of losing magnetism depend on
the softness of hardness of material
what does the quickness of losing magnetism depend onho
the softness of hardness of material
how can you test if the material is a magnetic material
if it attracts or or if it repulse it is a magnet
what are the magnetic material
nickel / cobalt / iron and compounds or alloys if they contain some magnetic material
what is the plotting compass technique
- Place the magnet on top of a piece of paper
- Draw a dot at one end of the magnet
- Place a plotting compass next to the dot, so that one end of the needle of the compass points away from the dot
- Use a pencil to draw a new dot at the other side of the compass needle
- Move the compass so that it points away from the new dot, and repeat the process above
- Keep repeating the previous process until there is a chain of dots going from one end of the magnet to the other
- Then remove the compass, and link the dots using a smooth curve – this will be the magnetic field line
- Repeat the whole process several times to create several other magnetic field lines
what is uniform magnetism
same strength and direction at all points
To show that the magnetic field has the same strength at all points there must be equal spacing between all magnetic field lines
