Electromagnets
The purpose of this science experiment is to demonstrate how the use of different amount of coils on a nail can change the performance of an electromagnet.
Purpose
Hypothesis
My Hypothesis is that the nail with the most coils around it will have a stronger magnetic field. The electromagnet with the stronger magnetic field will attract more metal BBs.
Materials
Procedure
1. Put on safety gloves.
2. Put BB’s in glass.
3. Wrap 25 coils of copper wire around an iron nail .
4. Hold the ends of the wire to a D battery.
5. Place the iron nail into the glass with BB’s.
6. Drop the BB’s in the bowl and count the BBs.
7. Wrap 50 coils of copper wire around the nail and repeat steps 4-6.
8. Wrap 75 coils of copper wire around the nail and repeat steps 4-6.
Data
Pictures
25 Coils
50 Coils
75 coils
Conclusion
The results show that the more coils around the iron nail the more BBs were collected. This means that the coils increased the strength of the magnet, therefor my hypothesis is correct.
Real World Connections
Electromagnets are used in everyday life very frequently and some ways they are used are in scrap yards for separating metals. Door bells because when the button is pushed it uses an electromagnet to ring a bell, and they can be used to make an electromagnetic train that hovers over the track.