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I am going to investigate what affects the strength of an electromagnet.
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Electromagnetic Coursework Area P I am going to investigate what affects the strength of an electromagnet. Things that I believe are likely to affect the strength are the strength of the current; the number of coils; the presence of a soft iron core; the type of wire; the resistance of the wire and the temperature. I will investigate how the number of coils affects the strength. In the experiment the only changing variable will be the number of coils. Everything else will stay the same-everything else being the temperature; the wire length; the wire thickness; the resistance; the type of wire and the presence of a soft iron core. To control the temperature I will need to keep switching the current on and off, so to do this I will add a variable resistor to the circuit that will do this for me. The resistance will be controlled if...
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