Name two ways you can change the strength of an electromagnet.
increase the number of winds around the core and increase the number or strength of the battery.
What kinds of materials are insulators?
What materials are attracted to magnets? Give one example of something that is and something that is not attracted to magnets.
What is the function of the D-cell or battery in the electromagnet?
It is the source of the energy
What is the function of the core or rivet in the electromagnet?
It is what becomes the temporary magnet.
a. a plastic cup
b. a steel key
c. a brass fastener
d. an piece of iron
b. yes
c. no
d. yes
What surrounds an electrical current?
Marcus had an aluminum nail that he was holding in a way that the magnet and the aluminum nail were touching. He tried to pick up a paperclip with the nail. Could he? Why or why not?
Why does the rivet or iron core in an electromagnet become a temporary magnet? Explain what happens.