PRESENTATION OUTLINE
An electromagnet is a soft metal core made into a magnet by the passage of electric current through a coil surrounding it. An electromagnetic field is a field of force that consists of both electric and magnetic components, resulting from the motion of an electric charge and containing a definite amount of electromagnetic energy. An electromagnet works because an electric current produces a magnetic field. The magnetic field produced by an electric current forms circles around the electric current.
Problem:how can I build a strong electromagnet that will pick up the most paperclips .
Hypothesis: I think the larger the nail the more paperclips it will pick up because it will be able to pick up more paperclips at once.
First nail
Our first and smallest nail was 7.62 cm long. The 1st test the nail picked up 1 paperclip. The 2nd test the nail picked up 2 paperclips. The 3rd test we took on this nail also picked up 2 paperclips. The average paperclips is 1.67
Second nail
The second was 8.26 cm long. The 1st test we took was 3 paperclips. The 2nd test we took was 4 paperclips. The 3rd test was 2 paperclips. The average paperclips we picked up with the second nail was 3 paperclips.
Third nail
This nail was 8.89 cm long. The first test we took it picked up 5 paperclips. The second test we took was 4 paperclips. The last test we took on this nail was 4 paperclips. The average of paperclips it picked up was 4.3 paperclips.
Conclusion
Our conclusion is that the large nail (8.89 cm) is the strongest nail and picked up the most paperclips.
Pictures of electromagnets in real life
