I will then turn the power pack on and record what voltmeter and ammeter readings. Apparatus and materials Cells, 1.
These meters have a very poor scale and are not calibrated in the same way that digital meters are. I shall then proceed to connect a 50 mm length of nickel-chrome wire, which shall be measured using a tape measure, he output from the ammeter. Revision than steel; length — longer wires have greater resistance Too high a voltage and the bulb will blow diagram 3.
Therefore the relationship between them is directly proportional. We are committed to helping students with Physics coursework writing and rewriting with the most reasonable terms.
I will also ensure that the wire does not heat up too much by confirming that I do not set the voltage too high on the power pack and by maintaining the same the voltage for every reading.
To support my prediction and conclusion, I could do further experiments. Factors affecting Resistance, Electricity, Science Help. At each stage they can connect the circuit, take readings quickly and then disconnect the power supply. Below is a table illustrating the effect of changing the variables see Table 2: If you use a mains power supply, use one that is designed to limit the output current to about 1 amp, and preferably with a current overload indicator.
Mathematical Nature of Resistance Resistance is a numerical quantity that can be measured and expressed mathematically. Physics coursework resistance of a wire diagram Term paper Help I am currently doing my physics coursework and i. In addition, I will make sure I turn the power pack off after each reading.
It will appear to be very helpful for future work, as outline will show you the direction of your physics coursework. This would have prevented the area of the wire from remaining constant and would have affected my results. To measure the current. Students can select the variables, the ranges of results and the equipment used.
Results Below is a table of my results Table 3. Furthermore, the resistance of a metal increases as its temperature increases. To be used as a conductor. Among other things you will have to create an outline for your coursework. There are possible sources of error that might have led to inconsistent results, such as a kink in the wire.
Investigating the resistance of wires Class practical A simple investigation of the factors affecting the resistance of a wire.
Variables There are different variables that can be changed in this experiment; these are the independent variable. This supports the theory that when wire is shorter, the same number of electrons are trying to pass through less wire.
However, this would then lose its value as an open investigation. I shall then connect the voltmeter across the wire I will be testing. Again, I will record the voltmeter and ammeter readings and turn off the power pack. School Science Support Topic: Variables Safety I will ensure experimental safety by confirming that all the wires are connected properly and that none of the insulation on the wires is worn.
Type the name of the material and click the Submit button to find its resistivity.GCSE Physics Coursework - Resistance of a Wire CourseworkResistance of a WireTaskTo investigate how the resistance of a wire is affected by the length of the agronumericus.comWhat is resistance?Electricity is conducted through a conductor, in this case wire /5(12).
Apr 19, · Conductors have resistance, but some are worse than others. The free electrons keep bumping into atoms. A wire's resistance depends on four main factors: Resistivity; Length of the wire; Cross-sectional area; Temperature of the wire; I will investigate how the length of the wire affects the agronumericus.coms: ๏ Use Ohm’s Law to establish the dependence of resistance on length ๏ Distinguish between resistance and resistivity ๏ Find the resistivity of a given wire and from this determine the material.
Apr 19, · I will investigate the resistance of a wire in relation to its length. Prediction. I predict that the longer the wire, the larger the resistance.
This is because the free electrons in the wire bump into more atoms, thereby making it harder for electricity to agronumericus.coms: Like the resistance to water flow, the total amount of resistance to charge flow within a wire of an electric circuit is affected by some clearly identifiable variables.
First, the total length of the wires will affect the amount of resistance. The longer the wire, the more resistance that there will be. Resistance of a Wire - GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire 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.Download