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. …showed first 75 words of 1671 total…

…showed last 75 words of 1671 total…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