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Word Count: 1,096
resistance Of a piece of resistance puttyThis investigation is designed to look into the resistance of different materials in this case resistance putty in the form of wires and their conducting capability in different shapes We must bear in mind though that different thickness and length of the putty used to make up the wire itself will affect the electric conduction capability Therefore the factors are The thickness of the putty eg 1mm 2mm 3mm in diameter or 1 cm in diameter The length of the putty eg25cm 50cm 75cm longThe experiment will require both the readings of voltage and current in order to produce the value of resistance according to the formula The current flowing through the wire will be recorded to the nearest 001A using an ammeter placed in series with the circuit The voltage across the putty will also be measured and recorded to the nearest 001V using a voltmeter placed parallel across the putty To make it a fair test the cell terminals will be reversed after the first readings so that the current would flow in the opposite direction and then be recorded down again to give repeat readings The 2 readings for I or current will then be averaged and the 2 readings for V or voltage will also be averaged So that I could calculate the resistance by using the formula RV I resistance voltagecurrent or resistance potential difference across the wirecurrent through the wire
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