Title: Electromagnet Model Materials: I battery 1 large iron nail electrical wire pins thumbtacks Procedures: (Note: Make sure that the iron nail does not have any rust. Be careful in handling materials. ) 1. Make an electromagnet by winding the electrical wire around the large nail. 2. Connect both ends of the wire to a dry cell. 3. Test the electromagnet by placing some pins and thumbtacks near the nail. Does the nail attract the pins and thumbtacks? 4. Loosen the coil of wire in the electromagnet and find out how many metals are attracted to the nail. Now, wind more coils of wire. Which setup attract more metals? 5. Add more dry cells to the electromagnet. Make sure you connect the dry cells properly. Which setup attracts more metals? 6. Change the nail into a smaller one. Which setup attracts more metals?​