• Level: GCSE
  • Subject: Science
  • Word count: 910

Extracts from this document…


Investigation to Show How Length Affects the Resistance of a Wire. An investigation has been set to discover how the length of a wire affects the resistance within it. Planning and Information: What Is Resistance? Resistance is simply a collision between positive ions from which the structure of metals is formed and the free electrons that surround the ions. The more the collisions that occur, the more the resistance and the more the resistance the more the wire’s temperature increases. The increase in temperature means that the electrons will be affected and therefore move faster which in turn means that there will be more collisions. Electrons move whilst the positive ions remain stationary. What Is Expected To Happen And Why? I expect that as the wire gets longer, so too will the resistance increase (as the wire gets longer it increases the amount of ions and ion collisions), this means that they should be directly proportional…

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