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Practical Assessment for Physics: Investigating the Resistance of Conducting Putty Possible Variables: Thickness, Length, Temperature. Variable to be investigated: Length as it is the most reliable way of creating a fair test. Aim: To see how the variable lengths of the conducting putty will affect the resistants in the circuit. Prediction: I predict an increase in the length of the putty will increase the resistants in the circuit. This is because there is a bigger area for the charges to travel through, with less chance of a collision. I came to this conclusion of my prediction by collecting evidence from an 'AS/A2 Physics' book by Wendy Brown. Apparatus: Method: (1) I first collected all my apparatus shown in the diagram, making sure that both the amp meter and the volt meter were reading positive. I then collected some conducting putty. (2) I rolled out the putty on a flat surface using the palm of my hands so...

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