Transcript Magnetic fields 071211

Electromagnetic Fields
A magnetic field is an area where the forces of
attraction from a magnet are working.
An electromagnetic field has the same effect as a
magnetic field but it can be turned on and off by
stopping the electricity which it requires.
Electric motors are one of the main uses of
electromagnetic fields.
Electric motors convert electrical energy into
mechanical energy. The mechanical energy is
normally used to turn things like wheels.
A generator is like an electric motor used the other
way where mechanical energy is converted to
electrical energy.
Other uses of electromagnetic fields are LCD
screens and electromagnetic cranes.
A magnetic field is an area where the forces of attraction from a
magnet are working.
An electromagnetic field has the same effect as a magnetic field but it
can be turned on and off by stopping the electricity which it
requires.
Electric motors are one of the main uses of electromagnetic fields.
Electric motors convert electrical energy into mechanical energy. The
mechanical energy is normally used to turn things like wheels.
A generator is like an electric motor used the other way where
mechanical energy is converted to electrical energy.
Other uses of electromagnetic fields are LCD screens and
electromagnetic cranes.
Magnet
?
Fan
•Electric motor
•Generator
Crane dropping car
on LCD screen
on
on
on
on
off
off
off
off
off