... silver. Copper and alu-minum are also excellent electrical conductors. Iron, steel, and various other metals arefair to good conductors of electricity. In most electrical circuits and systems, ... magnetic fields keep producing one another over and over again through space.Chemical energy is converted into electricity in all dry cells, wet cells, and bat-teries. Your car battery is an excellent ... of juice,” and the supply of chemical energy must be restored bycharging. Some cells and batteries, such as lead-acid car batteries, can be rechargedby driving current through them, and others,...