Amorphous silicon solar battery receiving light generated current through the electromagnet to promote toys, sports toys solar some beautiful and pleasing design highly profitable, such as the highest car put the sunflowers, the purchase price of five retail price of $ when selling for $ 25, and the bells a principle junior physics, the electromagnetic driven me apart before you dismantle a look to understand, is an electromagnet. Small motor, my physics teacher said, he checked the information, which does have coils, magnets, but, strictly speaking, a motor