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Find out how the length and width affect the resistance of a graphite track.
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11E GCSE PHYSICS INVESTIGATION PLAN AIM To find out how the length and width affect the resistance of a graphite track. INTRODUCTION In this experiment I will be investigating the electrical resistance of carbon in the form of graphite. Carbon is widely considered to be a conductor; in fact it is the only non-metal conductor. However, physicists think of carbon as a semi conductor. It is a poor conductor at low temperatures, but improves to become reasonable conductor, though not as good as for example copper, silver and gold at room temperature. If one refers to appendix B, the resistively1 chart shows how much more of an efficient conductor gold is in comparison to carbon. This means it is easier for electrons to carry charge through gold than carbon. Carbon has a unique structure, which allows electrical energy to be conducted. There are several types of carbon: carbon 60, graphite and diamond. Carbon exists in these...
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