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Find out what affects the resistance a wire.
Member rating: No Rating | Words: | Submitted: Thu Mar 24 2005
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Physics Practical Planning The aim of our investigation is to find out what affects the resistance a wire. The key factors are: 1 The length of a wire- the shorter the wire the less resistance there is because there are less atoms for an electron to bump into. 2 The thickness of a wire- the thicker the wire is the less resistance there is, this is because there is more space between the atoms for the electrons to pass through so there should be less collisions. 3 The material of a wire- some materials have more free electrons so therefore there would be less resistance because they help the flow of the atoms. 4 The temperature of a wire- the higher the temperature the higher the resistance because heat causes atoms to move more freely so they would get in the way of electrons. The key factor I am going to change is the length of the...
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