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Find how the length of a wire affects its resistance.
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Tristan Lochman GCSE Physics Coursework AT2 Resistance of a Wire AIM: To find how the length of a wire affects its resistance. Method: I will measure out lengths of bare wire, all of the same type of metal, thickness, and keep them at the same temperature (to keep the experiment reliable and precise) I will use constants of voltage and variables of lengths of wire. I will also measure the current and voltage by using a voltmeter and ammeter. Temperature is very important as it can lose energy in the particles and I will measure the resistivity of the circuit without the bare wire. To measure the resistance of each length of wire by using the equation: R = V / I Where R = resistance V = Pd. Across the conductor I = current This formula will give me a result in Ohms. Apparatus: Ammeter - 0-5 Amperes Voltmeter - 0-5 Volts Wires - insulated Bare wire - 1.6mm, and lengths of 10cm 20cm...
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