Today in lab, your group is investigating factors that influence the strength of an electromagnet. To create an electromagnet, an iron nail is
wrapped in a series
of coils of insulated wire and then connected to a battery. The strength of the magnet can be tested by its ability to pick
up paper clips. This is because the current emitted from the battery to the coils magnetizes the nail. The current passing through the
electromagnet produces a magnetic field.
Your group's results are graphed. What can you conclude based upon the results of your experiment?
A
The strength of the magnet increased as the amount of current increased.
B
The strength of the magnet increased as the number of coils was increased.
C
The strength of the magnet increased as the amount of current decreased.
D
The experiment was inconclusive. The strength of the magnet cannot really be tested.