As the length of the wire does not change each cm still gets the same number of volts across it - the potential gradient does not change and so the average drift velocity of individual elecrons does not change.
Prediction I predict that if the length increases then the resistance will also increase in proportion to the length. However, I made sure that the wire remained straight throughout the experiment.
We can write a custom essay According to Your Specific Requirements. The factors of resistance are; 1.
By looking at my graphs, I can see that in the graph showing the resistance of the thickness of a wire, a line gradually curving up to the right hand side from the bottom left, which means there is a gradual increase in resistance from the width of 0. Out of the 4 factors I am going to investigate 2, which are width and length and I have chosen these two because I think the investigation will be the most easiest to carry out, where I will only be using almost the same apparatus and circuit, where I will only have to change the width and length of the Nichrome wire, but also I believe that the length and width has a major effect towards the resistance, where the width of the wire will effect the electrons to travel through the wire without bumping into atoms depending on the space and the length may change the resistance whether the longer the distance the further energy and longer route to take for the electrons.
When investigating the length of the wire, I will firstly measuring the length of the wire with a ruler, so that my results are accurate and therefore the measurements should go by 10cm, 20cm, 30cm, 40cm and 50cm, but I will keep the width the same at 0.
Investigating the effect of length on resistance is common but some students may wish to investigate the effect of the thickness of wire. Apparatus and materials Cells, 1. I will also ensure that there is a clear indication that the power is isolated by means of a switch and an L.
In addition, I will make sure I turn the power pack off after each reading. There are factors which can affect how accurate our expriment is come on four levels. For example going through a busy street is more harder then walking through not so busy street, where I wont be bumped into as much.
Students should be encouraged to adjust the voltage to keep currents small with every set of readings. The number of electrons depends on the amount of electrons in the outer energy shell of the atoms, so if there are more or larger atoms then there must be more electrons available.
Resistance is inversely proportional to cross-sectional-area. Using the same piece of wire throughout the experiment meant its temperature rose slightly over time, which may have affected my results.
However, I made sure that the wire remained straight throughout the experiment. In addition, my prediction that doubling the length of the wire increases the resistance by a factor of two is correct see Table 4.
One reason I chose this investigation was because human reaction time is eliminated by not using the parachute method the parachute experiment is to find out the factors affecting the rate of decent of a parachutebecause you Hows Does Changing The Length Of Wire Affect Resistance.
Teaching notes 1 Use fine gauge wires. The variables I will control will be the type of wire resistivity and the cross-sectional area of the wire. If the length of the wire is increased then the resistance will also increase as the electrons will have a longer distance to travel and so more collisions will occur.
I could also consider using different cross-sectional areas of wires or even change the temperature of the wires deliberately and see how manipulating these variables affect the resistance of the wire. I think that the range of my results was sufficient enough for me to draw a valid conclusion about how the length of the wire affected the resistance.
The electronic configuration of an atom determines how willing the atom will be to allow an electron to leave and wander through the lattice. Students can select the variables, the ranges of results and the equipment used. So if the length is doubled the resistance should also double.
Some cell holders have clips which can bridge the insulator causing a 'short circuit'. Investigating the resistance of wires Class practical A simple investigation of the factors affecting the resistance of a wire. The type of material will affect the amount of free electrons that are able to flow through the wire.
In addition, my prediction that doubling the length of the wire increases the resistance by a factor of two is correct see Table 4. These collisions slow down the flow of electrons causing resistance. THE FOUR FACTORS THAT AFFECT THE RESISTNCE OF A WIRE ARE: 1.
LENGTH OF WIRE. 2. I started of with the experiment by setting up the circuit as shown above. We will write a custom essay sample on Factors affecting the resistance of a wire specifically for you.
for only. To investigate the factors of affecting the resistance of a wire Essay Sample Aim: To investigate the factors of affecting the resistance of a wire. In this experiment I will be using a metal nichrome wire to show the resistance when the length and width is changed.
Apr 19, · An investigation into the resistance of a wire. Free GCSE physics coursework essay. 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 resistance.
I have done a preliminary experiment to help me decide the Reviews: Some of the tests are done to benefit human lives and other tests are done to determine side effects of a certain household or cosmetic products. There are different variables I must control in order to obtain a fair test and ensure that the only factor affecting the resistance of a wire is the length of it.
Resistance in wires occurs. Resistance depends on the material the wire is made of.
The more tightly an atom holds on to its outermost electrons the harder it will be to make a current flow. The more tightly an atom holds on to its outermost electrons the harder it will be to make a current flow. An experiment to investigate the factors which affect the resistance in a wire.
Voltage is the electrical force, or "pressure", that causes current to flow in a circuit. It is measured in VOLTS (V or E).3/5(1).An experiment to determine factors affecting a wires resistance