The word magnetism is derived from iron ore magnetite
Chinese had known the property of the magnet even in 2000
B.C. and they used magnetic compass needle for navigation
in 1100 AD.
Gilbert suggested that Ea
4. Electromagnetic wave
James Clark Maxwell predicted that the change in both electric
and magnetic fields cause electro magnetic disturbance that travel
Oscillating electric and magnetic fields perpendicular to each
other cause disturbance
What is the difference between static
electricity & current electricity?
Static electricity is stationary or collects on
the surface of an object, whereas current
electricity is flowing very rapidly through
Electrostatics is the branch of Physics, which deals with
static electric charges or charges at rest.
The substances which acquire charges on rubbing are said to
be electrified or charged.
Two kinds of charges - positive and negative charge