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Factors Affecting The Resistance Of A Metal Wire.
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Helen Roberts 10P March 2003 Physics AT1 PLANNING Factors Affecting The Resistance Of A Metal Wire 1. Investigate some of the factors that affect the resistance of a metal wire. The current and voltage will be measured and then V = IR will be used to calculate the resistance. The potential divider circuit produced better results in the investigation into how resistance depends on the number of identical resistors connected in series, so this circuit will be used for this investigation, too. Variables and Constants 2. Possible variables include the length of the wire, the diameter of the wire, the material of the wire and the temperature. The chosen variable is length of the wire. Because this is the chosen variable, all of the others must be kept constant. The graph I will plot will be the length of the wire (in cm) against the resistance (in ?). Trials 3. Trial using a short length and a long length...
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