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Find out how the thickness and length of an electrical conductor affect its resistance.
Member rating: No Rating | Words: | Submitted: Mon Jun 06 2005
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Introduction Electricity is something we have all around us every day but we never really think about it, even though it is such an important part of ours life's. What is electricity? Before investigating the resistance of different metals it is important to understand the principal of electricity. Electricity is formed by the movement or flow of electrons being attracted away from their atoms by an applied force. This is easier to do with the some elements than with others. All atoms are made up of a central nucleus containing a number of positively charged protons and some have neutral charged neutrons this overhaul positive charge of the nucleus is counter balanced with negatively charged electrons that orbit the nucleus in layers or shells, this gives the atom an overhaul neutral charge. In some materials the electrons in the outer shell are only just hanging on by a very weak...
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