Physics (Resistance Of A Wire) Plan

What affects the resistance of a fit Planning for the SC1 Introduction: In this tasteation I lead be investigating how duration affects the resistance of a conducting fit out. This means I pass on be taking readings from an ammeter and to a fault a voltmeter at various aloofnesss of a wire. It will be antecedented by a mogul encampment in which I will ex stir the voltage to get different results. Aim: The aim of this experiment is to suffer out what affects the resistance of a wire. In this experiment I will be investigating whether or not duration affects the resistance of a wire. I will overly demonstrate this out on two different voltages (2v & 3v). Variables: here(predicate) are the ideas in which I will look into which component part/s should be alterd to get best results. I mobilize that the high the voltage the more the resistance will change when duration of the wire is changed. This means that the two variables will be distance and also vol tage. Prediction: I predict that the semipermanent the aloofness of wire the small the contemporary will be. My ratiocination for this is because the smaller the aloofness the less the menstruum has to travel, therefore if the length increases the current has to go a further distance reservation the current less. This is the homogeneous for every other experiment I do so I also think that the thirster wire the bigger the voltage, which reads on the voltmeter. My predictive graph of length of wire/ current in amps will be sheer ` system: Set up the experiment as shown below. I will start by setting the voltage on the federal agency pack to 2 volts. When that is done change the length of the wire so that it equals 5 cm, turn on the power and buck readings from the voltmeter (analogue) and on the ammeter (digital). Repeat the experiment with increments of 5 cm until the length of the wire is 60cm. After that retell the like experiment with the same voltage. Add the two ammeter readings up for all(prenominal! ) length and so norm them out. This will give the average current. Write knock devour all results and then repeat the experiment twice apply 3 volts. Record the results and lay out in a table. eer refer to the safety precautions onward doing this experiment. power pack Ammeter synthetic rubber precautions: Make sure that the wires temperature is at a suitable level. This is so that you don¡¦t burn yourself on it. It is contingent to take note this at a low temperature by only work stir up the power pack on for the time it takes to take the readings. as well honor an eye on the wire to see whether or not the wire is smoking. If it is smoking refrain from employ the power and wait until the wire has cooled down. How to make this a reasonably streamlet? There are many things to consider when making this a fair test. The first I had to do was that I should keep all the wires I was using the same. The reason for this is that diff erent wires defy different faults and different advantages and this would result in marvellous results. also I had to make sure that when the length of wire changed I would have check that the lengths were as accurate as possible throughout all my results. If my lengths of wire had been inaccurate then the results would also be inaccurate. List of Equipment: ?h 1 Power pack ?h 1 ruler with wire down midpoint ?h 5 wires ?h 2 crocodile clips ?h 1 analogue voltmeter ?h 1 digital ammeter precedent Results: electric potential on power pack (volts)          voltage on voltmeter (volts)          veritable on ammeter (Amps)         Length of wire (cm) 2         0.32         1.3         5 2         0.47         0.98         10 2         0.56         0.78         15 2         0.65         0.68         20 2         0.73 !         0.59         25 2         0.76         0.55         30 2         0.81         0.50         35 2         0.86         0.46         40 2         0.91         0.43         45 2         0.95         0.40         50 2         0.97         0.37         55 2         1.01         0.36         60 If you exigency to get a full essay, order it on our website: OrderEssay.net

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