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Factors affecting the resistance of a wire
Member rating: No Rating | Words: | Submitted: Thu Jul 11 2002
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Factors affecting the resistance of a wire PLAN · Aim To investigate the factors which affect the resistance of a wire · Prediction My prediction is that as the length of wire is increased the resistance will increase also; it will be directly proportional. This can be explained scientifically. Current is a free moving flow of electrons. Resistance reduces the flow of electrons. This resistance occurs when the electrons, that are attracted to the positive side of the cell, bump into the fixed lattice nuclei of the material that they are flowing through. This means the path of the electrons is erratic as they are changing direction. The more material there is for the electrons to flow through the more fixed lattice nuclei there are. More nuclei mean more bumping and therefore higher resistance. Double the length of wire would mean double the amount of lattices for electrons to collide with....
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