the length of the wire. ) the similarity ensures success. To check the accuracy of the instruments we can use the calculation Possible error x 100 Total We measured the length of the wire with a metre ruler, which was accurate to plus or minus 1mm and the biggest measurement that was made was 1000mm. What affects the resistance of a wire? Evaluation From my graph I can say that my results were fairly accurate and therefore they are quite reliable.
The material must be chosen sensibly, as some materials may be more available, less expensive and easier in use than others.
Essay on, resistance of a, wire 1877 Words 8 Pages.
Resistance of a, wire, coursework, resistance of a, wire.
However I will plan it out first to show each step of how I started, and then go into detail about the results and what the investigation on a whole has showed. To check the gradient of the graph, we can divide the resistivity of the wire, by the cross-sectional area. 0?, we can rearrange the formula to find the resistivity of the wire: We rearrange from this: R p l to this: p l Now we can find out the resistivity (p) of the wire, in ohm meters? FOR only.38.9/page, hire Writer, my results support my prediction and for that reason my theory as why it would be a straight line is also correct because the results could not be interpreted any other way. The actual physics of this assignment were challenging, but understandable. The graph is a straight line graph, showing that length of wire, resistance and voltage are directly proportional to one another (the voltage doubles, so does the resistance). In order to obtain this gradient value, I used resistivity, cross-sectional area, and resistance. Introduction: This first report in Physics will show the investigation of how the length of a wire affects its resistance. This means that the potential difference across the supply is equal to the sum of the potential differences across all the devices in the circuit.
Task To investigate how the resistance of a wire is affected by the length of the wire.
Theory What is resistance?
Electricity is conducted through a conductor, in this case wire, by means of free electrons.