For our project made a speaker using a cup, ear buds, magnetic wire, paper, magnet, paper clip. This works because a metal coil which creates a magnetic field when an electric current flows through it is attached to a cup to magnify the sound. This uses magnets and electricity because using them both helped create a magnetic and electric field in the speaker.
Tutioal
Step 1: Gather materials Step 2: Cut the paper into two 2 x 6 pieces Step 3: Roll 1 piece of paper around the magnet and put tape Step 4: Roll the second piece of paper around the magnet and the second one the tape it to keep it together Step 5: Pull the 1st piece of paper rolled around the magnets out Step 6: Rap the magnet wire around the magnet and second rolled paper 80 times leaving 2 inches on both sides Step 7: Glue the ends of the wire to keep it together Step 8: Cut the bottom of paper into 4ths and glue to the top of the cup Step 9: Cut a circle out of the top of the cup