How Do You Generate Electricity With Magnets?
According to “Fundamentals of Physics,” by David Halliday and Robert Resnick, when a closed wire cuts a magnet’s field lines, the electrons in the wire experience an electromotive force (emf). From this principal, you can generate electricity with magnets using little more than household items. Spin a stack of magnets right next to a coil in a circuit to make an emf in the coil that oscillates back and forth, creating an alternating current (AC). The more turnings in the coil, the more emf the circuit will experience. To increase the number of turnings, use thin wire. Fold two close creases into a 6 x 12-inch piece of cardboard. The creases should be a little wider than the magnet you’ve selected. Fold two more close creases about 4 inches away from the first two creases, making them as far from each other as the first two were. The cardboard should now overlap itself, making a four-sided enclosure. Punch a long nail all the way through the center of both sides of the cardboard. Tape a
