Experiment 2
In his second experiment, he repeats the same procedure he used in Experiment 1, except that this time he keeps the number of coils the same but changes the battery voltage. He records the number of paper clips attracted each time in a second table.
Battery Voltage (V) Number of paper clips attracted to the magnet
3.0 3
4.5 6
6.0 9
7.5 13
Which question can be answered based on the results of Experiment 2?
A.
How does the strength of an electromagnet vary when the voltage of the power source changes?
B.
How does the strength of an electromagnet vary when the number of paper clips changes?
C.
How does the voltage of an electromagnet vary when the strength of the paper clips changes?
D.
How does the voltage of an electromagnet vary when the number of coils of wire changes?