2007-03-14 12:57:18 · 5 answers · asked by liliana d 1 in Science & Mathematics ➔ Engineering
Free-flowing electrons in metal.
To Answers below: Hahaha, yes I did.
2007-03-14 12:59:20 · answer #1 · answered by yungr01 3 · 0⤊ 0⤋
1. Friction between moving dielectrics (as in raindrops falling through air) generates static electricity, EHVDC
2. Chemical reactions (such as between lead and sulfuric acid) generates low voltage DC
3. Rotating metal loops in a magnetic field generates AC electricity with a voltage proportional to the strength of the field, the number of turns in the loop, and the speed of rotation.
4. Thermocouples generate electricity by junctions between dissimilar metals, one at a high temperature and one at a low temperature. Ganging thermocouples to produce more voltage and current makes thermopiles.
5. Solar cells generate electricity by converting light energy into potential energy between the terminals of the cells. Cells are ganged in series-parallel combinations to increase voltage and current capacity.
6. Certain crystals will change mechanical vibration into electricity.
2007-03-14 20:18:19 · answer #2 · answered by Helmut 7 · 2⤊ 0⤋
Converted energy. Coal, oil, wind, sun, water, wood can all produce electricity.
2007-03-14 20:00:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It's a flow of charged particles (usually electrons) through some sort of conductor (usually copper or aluminum) which we call 'current', being caused by a potential energy difference we call 'voltage'.
HTH âº
Doug
2007-03-14 20:03:17 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋
YUNG:
Did you forget rubbing the Glass Rod with Silk Cloth?
2007-03-14 20:03:40 · answer #5 · answered by Answers 5 · 0⤊ 0⤋