2007-02-04 13:20:47 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Anything that has an electric charge and is allowed to dissipate.
Lightning, Static electricity, Chemical reactions. Magnets and wire. Each of these generate and conduct electricity.
The simple conduction of electricity creates an electomagnetic field.
2007-02-04 13:44:00 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Automatic door latches in buildings which need to be activated by the person you are visiting to unlock the door. Why?? Security. Inexpensive to make and use no power when not activated.
Large commercial electromagnets used to move ferromagnetic objects such as junked cars. Highly efficient - help sort ferromagnetic materials such as iron and steel - and can be very powerful.
2007-02-04 13:27:59 · answer #2 · answered by waynebudd 6 · 0⤊ 0⤋
Automatic fire door closers in an industrial building (fire alarm sys hits they de-energise and the doors close) or a industrial scrap iron magnet.. picks up the car and throws it in the crusher.. On picks up.. off detaches) theres yer two.. Both work on the same xact principle ...
2007-02-04 13:38:49 · answer #3 · answered by darchangel_3 5 · 0⤊ 0⤋
Northern lights and the sun`s 1200 mega watt about activity per year
its how the worlds work(electron action)
2007-02-04 13:24:16 · answer #4 · answered by Buddha Boy 2 · 0⤊ 0⤋
1: Your door bell is equipped with an electro magnet, it is turned on when someone presses the button, moving the metal plunger to hit the "bell"
2: the large crane that picks up scrap metal. When they turn it on, and drop it into a pile of metal, it picks up the ferrous metal and drops it when turned off.
2007-02-04 13:36:26 · answer #5 · answered by Daremo 3 · 0⤊ 0⤋
motors, generators, turbines.
2007-02-04 13:24:41 · answer #6 · answered by Coolltw2003 3 · 0⤊ 0⤋