Introduction
An electromagnet consists of a coil (a solenoid) which carries a current wrapped around a ferro/paramagnetic core. In order to build the strongest electromagnet you will have to do some research as to the effect that the core and coil have on creating a strong magnetic field. To do this you may want to use your notes (i.e. the "Electromagnet(s)" note) or the internet; you can start at: http://science.howstuffworks.com/electromagnet.htm.

Requirements:

1. You must submit a fully completed Planning Sheet BY THE END OF THE PLANNING CLASS (1 per group) to the submission conference of first class. You must follow this design OR submit a supplemental planning sheet if you wish to change your design. While you planning sheet will not be marked, failure to adhere to your plans or not submitting this sheet will result in a deduction of 2 from your final score. Multiple electromagnets may be used BUT they must have only two wired to hook up to the source (i.e. you cannot power all of the magnets individually).
    
2. Your electromagnet must be securely wrapped so that it can be handled without worry of disconnection or damage during testing.  It will be hooked up to a DC power supply source (up to 10A) and It must be able to be set up in less than one minute. If it disconnects during testing or overheats you will receive a mark of 0.
    
3. Your electromagnet will be tested by lifting a circular 5cm diameter magnetic plate supporting a bucket. Your magnet must be able to lift this way to earn the minimum marks. In order to go for the record you can design your own weight lifting attachment if needed.
    
4. You may use any materials you like as long as the actual winding of the electromagnet is done by members of your group. All construction must be done in class, although you are encouraged to bring in your own materials.

Materials:

Samples of types of wires can be seen at the front of class which will always be available. Any special wires or materials must be SPECIFICALLY (i.e. wires / cores etc.) requested. If Mr. I is unable to get you that material he will inform you the following class.

When done:
Disassemble your electromagnet and neatly put away all wires etc.
 

Safety:
Be aware that the wires may become very hot if you do not carefully monitor the temperature.
Regularly check your setup and wires for overheating.
If you smell something hot immediately turn off the power.
You must measure the current flowing, so that at no point may you run more than 10 A through your circuit.
 

Marks:
Top weight supported in each class receives a mark of "4"
Any weight supported over 750 g receives a mark of "3"
Any weight supported over 500 g receives a mark of "2"
Any weight supported under (but not including) 350 g receives a mark of "1"
An electromagnet that goes over temperature, disconnects during testing, takes longer then one minute to set up or does not work will receive a mark of "0"
 

An incomplete planning sheet OR a magnet that does not accurately match your plan will reduce your mark by 2.