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GCSE Physics Coursework - Investigation of the resistance of a wire
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GCSE Physics Coursework - Investigation of the resistance of a wire AIM: To investigate what affects the resistance of a wire. VARIABLES: The material of the wire - e.g. iron has greater resistance than copper. The length of the wire. The cross-sectional area of the wire - e.g. the width of the wire. The temperature of the wire. PREDICTION: I have chosen to base my investigation on the length of the wire. I predict that as the length increases, the resistance increases too. HYPOTHESIS: I hypothesise that the length of the wire affects its resistance. This is because from in-depth research from encyclopaedias and the internet I have found out that the electric current is the flow of charged particles around a circuit of conducting material. In solid metal conductors, current is a flow of negatively charged electrons; in an electrolyte it is a flow of positive and negative ions. The energy given to electrons to push...
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