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How does length and width affect resistance
Member rating: No Rating | Words: | Submitted: Tue Feb 27 2007
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How does length and width affect resistance ? Aim To investigate the resistance of the wire as the diameter and length is altered. Theory What are atoms made of? All materials, solid, liquid or gases are made up of atoms. The atoms themselves consist of a central bit, called the nucleus, made up of particles called protons (which have a positive electrical charge) and neutrons (which have no charge) Orbiting around the nucleus are electrons which are very tiny and have a negative electrical charge. Tiny as atoms are, they consist of even more minute particles. Each atom has a definite number of these subatomic particles. The protons and neutrons are crowded into the nucleus, an exceedingly tiny region at the centre of the atom. If a hydrogen atom were about 6 kilometres in diameter, its nucleus would be no bigger than a tennis ball. The rest of an atom outside the nucleus is mostly...
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