Trevor


 * Does the number of coils effect how strong an electric magnet is?**

**Hypothesis** More coils of wire will make the electric magnet stronger

Introduction:

**Materials** 18 gauge wire, 6 volt battery, large bolt, knife to cut the wire alligator clips

**Procedure:**

1. Cut the wire 200 cm long. 2. Strip two cm of plastic off the wires. 3. Get a six cm bolt. 4. Wrap the wire around the bolt. 5. Get alligator clips and a six-volt battery. 6. Connect the alligator clips to the a 6 volt battery. 7. Connect the wire to the alligator clips to make an electric magnet. 8. Make the magnet with 10, 20, 30, 40, and 50 coils around the bolt.

**Data and Observations:** When I attached the alligator clips straight to the bolt, it showed sparks, but it did not pick up anything. With ten wire coils, the electric magnet picked up a paperclip part way. With thirty coils the magnet was barely stronger than twenty coils so I gave it an extra 2/5. Forty coils could almost pick up two paperclips. with out coils you have no magnetic field.
 * **Number of coils** || **0** || **10** || **20** || **30** || **40** || **50** ||
 * **Number of paper clips picked up** || **0** || **1/2** || **1** || **1 1/5** || **1 1/2** || **2** ||

Conclusion: The magnetic force could about a half of a mettle paper clip

**Research: http://www.coolmagnetman.com/magelect.htm http://www.bbc.co.uk/schools/ks3bitesize/science/energy_electricity_forces/magnets_electric_effects/revise1.shtml http://www.amanogawa.com/archive/wavesA.html**