Limited access

Upgrade to access all content for this subject

A student builds an electromagnet by wrapping wire around an aluminum cylinder, then connecting the ends of the wire to a 9-volt battery. The student measures the electromagnet’s strength by seeing how many small paperclips the electromagnet can hold. The student then replaces the aluminum cylinder with an iron cylinder of the exact same size.

Compared to the aluminum electromagnet, the iron electromagnet will hold

A

more paperclips, because iron has a greater magnetic permeability than aluminum.

B

more paperclips, because iron has a larger specific gravity than aluminum.

C

fewer paperclips, because aluminum has a greater conductivity than iron.

D

fewer paperclips, because aluminum has a greater number of valence electrons.

Select an assignment template