Scenario
A group of students has been testing electromagnets in the lab. They made an electromagnet by
wrapping copper wire around a nail. For one set of tests, they wrapped the wire around the nail 25 times.
For the second set of tests, they wrapped the wire around the nail 50 times. They also have 4 different
batteries: 1.5 V, 3.0 V, 4.5 V, and 6.0 V. They use their electromagnets to see how many paper clips each
can pick up.
Data
For each electromagnet, two trials were conducted at each voltage. The data was recorded in the tables
below.
25-turn Electromagnet
Battery Voltage
Number of Paper Clips Picked Up
Average
First Try
Second Try
1.5 V
3.0 V
4.5 V
6.0 V
NN
50-turn Electromagnet
Number of Paper Clips Picked Up
First Try
Second Try
Battery Voltage
Average
1.5 V
3.0 V
4.5 V
6.0 V