Resistance in a Wire.

METHOD: Equipment Nichrome Wire Ruler Power Supply 2x Crocodile Clips 4x Wires Ammetre Voltmeter forwards I started the audition, I made a trial scrutiny using a type of softw atomic number 18 called Focus educational Softw be Science Investigation. Here are the results of the examine. Unfortunately, the software and gave the voltage and current in two decimal fraction places. This is wherefore the r2 was non 1 but an extremely untroubled 0.9991. R2 is a mathematical value given on a deliver to show how reliable the data is. It gives you a edition build on the distance the points are away from the line of outdistance fit (trend line). I learnt that the accuracy of the reading is essential as a slight castrate of even 0.01Volts change bemuse a great affect on the Resistance. Also the reading are not the same every time and does change during the experiment so in my main run I leave take a reading once the electric potential or genuine have settled. To carry out my experiment I pull up stakes start with a metre rule and a piece of Nichrome telegram taped at apiece ends. I will set up a circumference the like the one below and I will cat a power supply on 2 Volts so that the wire will remain cool and keep the test fair. I will range my measurements from 10cm to 100cm going up in piles of 10cm as this will give my a good recitation of the resistance in a wire. I will not do it every 1cm or 5cm as the clips are 4mm full so there will be a astronomic margin of error in my results.

         riddle 1                           Test 2                           Test 3         !                  AVERAGE aloofness of Wire (cm)         Voltage          reliable         Resistance         Voltage          contemporary         Resistance         Voltage         Current         Resistance         Resistance 0         0.00 ... If you want to get a full essay, found it on our website: OrderEssay.net

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