... affect the resistance of a wire is the temperature of that wire. This is because as the temperature is increased, the fixed atoms gain kinetic energy from the heat and begin to move. This therefore increases the amount of collisions between electrons and atoms and therefore more energy would be lost through heat from collisions, if only the temperature was increased. This is because energy is lost when the electrons and atoms collide from the impact, this is collision theory. Another variable that could affect the resistance of a wire is the material of that wire. This is because different metals have different amounts of electrons in their outer shell. The more electrons that a metal has, the more electricity that can pass along the wire, therefore it would have less resistance. This is because the electric energy is passed from electron to electron through collisions, so the more electrons, the more ...

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