2006-12-01 20:41:04 · 7 answers · asked by julie b 1 in Science & Mathematics ➔ Engineering
Well... you have
Magnetism... (Dynamo, Generator - the most common such as Power Stations, Hydro-electricity
Chemical.. Battery (or more correctly Cells)
Thermal... two dissimilar metals when heated at a joint will cause a current to flow. AKA Thermo-couple
Solar.... Photon energy on a semi-conductor causing movement of electrons (harness these in an orderly fashion and you have electricity)
2006-12-02 07:01:14 · answer #1 · answered by CPWS 3 · 0⤊ 0⤋
Electricity is a natural force, closely related to magnetic force.
An electric potential (electic force) is created when electrons are removed (or added to) an object. The usual way of generating electricity for power applications at home and in industry is to pass a magnetic field continuously across a coil of wire, in what is called an electric generator.
The magnetic force sweeps the electons to one end of the wire, making this end negative.The other end is short of electrons, so becomes positive., causing an electric field potential at the terminals of the generator.
You can then connect and electic 'load' such as a light bulb, a heater or a motor across the terminals and the electrons will flow from one pole (terminal) of the generator, through the load and back to the other pole (terminal) of the generator.
2006-12-01 23:13:52 · answer #2 · answered by Up the pole 2 · 0⤊ 0⤋
Electricity (from Greek ήλεκÏÏον (electron) "amber") is a general term for the variety of phenomena resulting from the presence and flow of electric charge. Together with magnetism, it constitutes the fundamental interaction known as electromagnetism. It includes many well-known physical phenomena such as lightning, electric fields and electric currents, and is put to use in industrial applications such as electronics and electric power.
2006-12-01 20:53:16 · answer #3 · answered by ifureadthisur2close 2 · 0⤊ 0⤋
Batteries, inductors, capacitors, resistors, transformers...
2006-12-01 21:01:00 · answer #4 · answered by MooseBoys 6 · 0⤊ 1⤋
AS far as I was aware, it is from water!
2006-12-01 20:51:10 · answer #5 · answered by brunelscooby 4 · 0⤊ 1⤋
the touch of opposite sex
2006-12-01 20:49:19 · answer #6 · answered by coolant82 2 · 0⤊ 1⤋
It comes from a battery!!!!!!!!!!
2006-12-01 20:49:12 · answer #7 · answered by Anonymous · 0⤊ 0⤋