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Investigating the factors affecting the size of current flowing through a length of resistivity putty.
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04/02/97 ????? GCSE PHYSICS SC1 INVESTIGATION 1996/7 INVESTIGATING THE FACTORS AFFECTING THE SIZE OF CURRENT FLOWING THROUGH A LENGTH OF RESISTIVITY PUTTY. CANDIDATE NUMBER 6247 CENTRE NUMBER 15131 PLANNING AIMS The main aim of this investigation will be to investigate the factors that have an effect on the size of the current passing through a length of resistivity putty. I will also try to explain my results using a number of models formulae and theories including Ohm's law, the formula for resistivity and a water model. VARIABLES Below is a list of the variables which are likely to have a major effect on the size of the current passing through a length of resistivity, putty: 1. The length of putty used. 2. The cross-sectional area of the putty. (Including the amount of contact between the plates and the putty). 3. The temperature of the putty. 4. The voltage across the putty. 5. The resistance of the wires etc. and the contact resistance between the plates and the putty. Other factors, for example the density of the...
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