Arrow convention
Arrow: into the page
Dot : out of the page
Magnetic fields produce moving charges
Drawing of a magnetic field example
Lines never cross.
Opposite magnetic poles attract, similar magnetic poles retract.
Electromagnetism
Atomic magnetism
Domain theory
testing the domain theory
Induced magnetization
Demagnetization
Electromagnetic applications
Subtopic
MRI machine
Right hand rule
Thumb of right hand points in direction of current
Than fingers curl around wire in direction of magnetic field
Demonstration
Current is measured in Amperes
Moving charges produce magnetic fields
Magnetic fields
The magnetic force filed influences the space around the magnet
Drawing magnetic fields
Lines proceed N to S outside a magnet
forms closed loops within the magnet
Spacing of the lines represent strength of force
Closer the lines, greater the force
Magnetism basis
Every magnet has 2 poles
South pole seeks south direction on Earth.
North pole: seeks north direction on Earth.
