Plan for Science Course Work The Resistance of Lengths of Wire

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Aim: To investigate the resistance of different lengths of wire and to look for a correlation between the length of the wire and it's resistance. Research: Ohm is the common unit of electrical resistance, equivalent to one volt per ampere and represented by the capital Greek letter omega. The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. …

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…measure the temperature of the wire, and keep it at a constant temperature by refrigeration. I would also correct my placement of the voltmeter. I would like to expand my experiment to look the other variables, change the voltage, type and width of wire. Bibliography: Microsoft Encarta 95 CD ROM The On-line Britanica Encyclopaedia Co-ordinated Science 2 Edited by Ken Dobson & Chris Sunley GCSE Double Science Physics The Revision guide (Higher Level) Edited by Richard Parsons