How can the materials in the diagram be used to make a magnet?
A.
replace the iron nail with a wood rod
B.
add more loops of wire to the iron nail
C.
place the nail closer to the iron filings
D.
touch the ends of the wire to the ends of the battery
B. add more loops of wire to the iron nail
By adding more loops of wire to the iron nail, you can create a stronger magnetic field when an electric current is passed through it. This will help in making a magnet.