• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigation of the factors affecting the resistance of a piece of wire.

Extracts from this document...


Investigation of the factors affecting the resistance of a piece of wire


Resistance is when the electrons travelling through the wire collide with the atoms of the wire.
These collisions slow down the flow of electrons causing resistance. Resistance is a measure of how hard it is to move the electrons through the wire.

I am supposed to investigate one factor which will affect the amount of resistance occurring in a circuit. In order to decide which factor I will investigate I am going to consider how easily I can gather results for each one and how that certain factor affects the rate of resistance.

The first factor I have chosen is Wire width. If you increase the width of the wire, the rate of resistance will decrease because there’s an increased area for the electrons to travel through to, due to this space there should be less collisions with the atoms of the wire.

To measure the wire width I would use different widths (in SWG) of the same length and same material of wire. In order to find out the widths I’d have to convert the SWG into mm.

...read more.



The only change I made to my original plan was to use a power pack instead of a cell. The power pack was providing 3 volts.





...read more.



If I was going to repeat the experiment instead of connecting the voltmeter to the main circuit I would connect it to the piece wire which was being tested directly. I would do this so that the voltmeter is measuring the voltage of just the piece of wire being tested and not the whole circuit aswell.
The second change I would make would be to use pointers instead of putting crocodile clips on top. I would do this because pointers would be more accurate. The pointers would be more accurate because the tips have a much smaller area than the crocodile clips giving a more accurate measurement of the length of wire.
If I had more time I would repeat this experiment with different SWGs of wire.

...read more.

This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Electricity and Magnetism essays

  1. Discover the factors affecting resistance in a conductor.

    I have learned how to set up circuits, and that only the multimeter and the carbon putty is needed to work out the resistance. I have learnt the different factors affecting resistance, allowing me to produce the best possible procedure: 1)

  2. Resistance of a Wire Investigation

    of the readings I took, as it would reduce the percentage error, by increasing the volumes, I decided that the inaccuracy of maintaining a constant temperature would outweigh any advantages. I am therefore going to perform the experiment at room temperature, checking the temperature frequently, in case the heat given

  1. The aim of this investigation is to investigate the factors affecting the resistance of ...

    Several factors affect the resistance of a wire. They include: * Length * Cross - sectional area (thickness) * Type of material I will be investigating all three factors. I am going to use two types of wires in my investigation. They are: > Constantan > Nickel Chrome (OR Nichrome)

  2. An investigation into the factors affecting the resistance of a wire.

    Apparatus list The apparatus in which I will need in order to undertake this experiment are: -1 meter ruler -Power Pack -Voltmeter -Connecting Wires -Ammeter -Sellotape Nichrome Wire (alloy of nickel and chromium) -Crocodile Clips Circuit Diagram This is a diagram of the circuit in which I will set up

  1. Factors affecting Resistance of a wire

    Preliminary Test I shall use an 18 SWG (set Wire Gauge) in this preliminary test and I will use 3 different voltages such as 3V, 6V & 9V. I will connect the equipment as shown in the diagram on the next page.

  2. Investigate one or more factors affecting the resistance of metal wires

    Copper is a better conductor of electricity than iron. In different conductors the ease of flow of the electrons is different and so the conductors have different resistance. Constantan is a metal alloy - its composition is 60% copper and 40% nickel. In a metal, the pathways for the electrons to move are regular since the atoms/ions are all the same size.

  1. Investigating the factors affecting the resistance in a wire

    2.3 Standard Wire Gauge Standard Wire Gauge (SWG) is an imperial set of sizes used to measure the diameter of electrical wire (see Figure 5). The basis of the system is the mil. The smallest size in the Standard Wire Gauge is 1 mil (0.001in), while largest size is 500 mil (0.50in).

  2. Investigating the factors affecting the resistance in a piece of wire.

    I will need to use a wire with large resistance range that is a good conductor of electricity. The wire must not overheat easily. The apparatus I will need to perform the preliminary experiment will be: * Power pack (2volts)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work