How Do You Make An Electromagnet With A Switch?
Electromagnets are man-made devices that imitate the activity of natural magnets. They consist essentially of a coil of wire attached to a battery, with a switch to turn it on and off. As the battery sends a current through the coil, it forms a magnetic field that under the right circumstances generates enough power to lift a car in the air. Electromagnets are simple devices that you could build at home. Cut the wire about six inches from one end, using the snipping part of the wire strippers. Wind the longer piece of wire around the nail, starting at one end and working to the other. Make the winding tight and ensure that the loops touch each other. Leave a few inches of wire unwound on each end. The iron in the nail is easily magnetized and will greatly magnify the strength of your electromagnet. Remove about one inch of insulation from both ends of the coil with the wire strippers. Attach alligator clips to both ends. Attach one of the trailing ends of the coil to one of the termina
