Electromagnet
This electromagnet works by wrapping a conductor, like wire, around an iron core and passing electricity through it, creating a magnetic field. This magnetic field can get stronger or weaker as the number of coils increases or decreases because each coil has a small magnetic field, that combine to create a larger field across the entire rod. Even though no components are connected to the circuit, current is still being used to make the magnetic field, preventing a short circuit.
Also, it is important to note that INSULATED wire should be used for this project, otherwise the electricity will pass directly through the rod and cause a short circuit!
Supplies
Creating the Coils
Leaving about six inches at the top, secure the wire to the top of the iron rod using tape. Then, start wrapping the wire around the rod, keeping the coils tight and close together, making sure that they are wrapped in the same direction.
Securing the Wire
Continue wrapping the wire until you reach the bottom of the rod. Then, secure the wire using tape, leaving about six inches at the end.
Finishing the Circuit!
Connect one end of the wire to the positive end of the battery, and the other to the negative end. A magnetic field should be created, that can attract paper clips!