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Factors Affecting The Resistance Of A Wire Introduction In this investigation I am going to be looking at which factors may affect the resistance of a wire. A current will be passed through a given wire of a pre-determined length. For an electric current to flow, there has to be a source of electrons i.e. a battery. Electrons are released from the negative battery terminal (-), and attracted by the positive terminal (+) through the circuit. The resistance of the circuit will limit the amount of electrons moving through it. The direction of current flow can be considered in two ways, either as conventional current where the flow is from positive to negative or as electron flow from negative to positive. Both are valid. In simple d.c. circuits then conventional current is appropriate. However if an electric field is applied to some free electrons in a copper wire, the electrons start moving, and...

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