Resistance coursework - some useful things :: essays research papers

Resistance CourseworkPlanningAimInvestigate how the distance of a wire affects the flowing and resistor of a wire.VariablesThe variables that could change resistor atomic number 18Length of the wireCross section area (thickness)ever-changing materialsChanging temperaturesThe variable I am going to change in my experiment is the distance of the wire.Prediction and HypothesisI think as you increase the length of the Constantan wire, you also increase the amount of resistance. The current is the flow of electrons the current is dependent on the amount of voltage, which is applied. voltage is the stir given to the current. The current has to go through a circuit, which contains resistance so if you increase that push you also increase the flow of the current. All materials earn a slight resistance to electricity factors affecting the resistance are Length, Voltage & Temperature and Surface Area.Preliminary WorkChanging all the length of the wireLengthVoltage (V) circulating(p renominal) (A)Resistance (&61527)Short5.450.2620.96 capacious5.560.2423.16Longest5.580.1929.36Conclusion the longer the wire, the higher the resistanceChanging only the cross section area of the wireThicknessVoltage (V)Current (A)Resistance (&61527)Single4.731.453.26Double4.441.982.24Triple4.342.072.09Conclusion the thicker the wire, the lower the resistanceChanging MaterialsMaterialVoltage (V)Current (A)Resistance (&61527)Constantan5.510.4811.47 atomic number 131.828.630.21Conclusion different materials conduct electricity better Changing TemperaturesTemperatureVoltage (V)Current (A)Resistance (&61527)Cold2.276.720.34Hot2.627.000.37Conclusion I came to a conclusion that the diminution in current is the increase in resistance this is because the current although less of it they collide with the resistance causing a decrease in the output voltage. List of equipment and circuit diagramPower guide6 connecting leadsPush switch2 crocodile clipsWire (constantan)VoltmeterAmmeterMeter sti cks rope diagramAnalysingAs the length increased so did the resistance.This is because in a longer piece of wire the electrons have to push past to a greater extent ions.The electrons have a negative charge and the ions have a validating charge. So energy is needed to keep the electrons flowing.