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Essay Details:
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Essay text:
I shall keep the other variables constant, to ensure this is a fair test.
For this investigation, I will need the following apparatus:
· Power pack
· Variable resistor
· Ammeter
· Voltmeter
· 6 wires of different diameters
I will set up a circuit as in the diagram:
By running a constant voltage through the wire, I will be able discover the resistance of it with Ohms law, because of the constant voltage, and the fact I will know the resistance of the circuit using the variable resistor. I will maintain a constant, low voltage output from the power pack, so the voltage is not too high to be read by the voltmeter...
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