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Investigate the effect of strength and current using an electromagnet by how many coils you put on it and by changing the voltage.
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| Submitted: Sun Dec 15 2002
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An Investigation into Electromagnets Aim- I am going to investigate the effect of strength and current using an electromagnet by how many coils you put on it and by changing the voltage. Apparatus- Power pack, Wires, Crocodile clips, Ammeter, Coils, Paper clips (staples), Variable resistor Prediction- I think that the more current that goes through the wire, the greater the electromagnetic pull of the iron core will be. This is because the current going through the wire makes the iron core the factor that induces electromagnetism, as so when there is more current, there will be more electromagnetism. This is the same with the number of coils around the electromagnet, the more power is returned so therefore the more paper clips will be picked up. Plan- The two variables are the number of coils and increasing the current. I am going to keep the voltage constant in the first experiment and keep the number of coils the...
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