Electromagnetism
Electromagnetism is one of the four fundementals
of nature. It holds the world together by occuring
between electrical charged particles.
THE PROPERTIES
Propgated by oscillating waves
electric and magnetic waves
oscillating at right angles to each
other
They exhibit properties of
interference and diffraction
Travel at a speed of 3 × 108 m/s
in a vacuum
They are transverse waves
The relationship between
wavelength and frequency of
eletromagnestic wave is : c = v λ
HOW TO MAKE
We can make an electromagnet by
placing a soft iron between some
coiled wire and paring the
coiled wire in two ends of a
battery.
When the current passes through
coil, the iron will be
magnetised. Hence a
electromagnet is made
THE FUNCTION
Electromagnetic forces are
responsible for the chemical
bonds between atoms which
produce molecules, and
intermolecular forces. The
electromagnetic force governs
all chemical processes, which
arise from relations between the
electrons of adjoining atoms.