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

Resistance Investigation-Factors affecting the resistance of a wire

Extracts from this document...

Introduction

Resistance Investigation-Factors affecting

the resistance of a wire

Prediction

I predict that the longer the wire is, the more the resistance with increase.

Planning

The factors that affect resistance are:

  • Temperature of resistance wire
  • Length of resistance wire
  • Thickness of resistance wire
  • Type of material of resistance wire

If the length of the wire is changed this could affect the affects of resistance. For example, if the wire was made longer, more atoms are in the way of the electrons so there are more collisions increasing the resistance.

If the thickness of the wire is increased, more pathways are available for the electrons to take so they can avoid collisions with the atoms. This also results in the resistance decreasing.

If the material of the wire is different, it changes the arrangement of the atoms, which also changes the amount of collisions between atoms.

If the temperature of the resistance wire is too high, collisions will be high as both the electrons and atoms will be moving faster because of the increasing heat. This will increase the resistance.image00.png

...read more.

Middle

I left a 15cm gap between each measurement to make sure I will get the most reliable results that I can. This wide gap also prevents heating of the wire as if the measurements were close together only a certain part of the wire would get heated resulting in the wire increasing in temperature quickly.

...read more.

Conclusion

My graph supports my prediction by going straight through 0, which tells us the Resistance is proportional to Length and proves that my prediction is right.

Evaluation

The method I used to carry out the investigation was a good one as I achieved good and reliable results. My results showed me clearly that Resistance is proportional to Length.

There were no anomalous results, this shows that my graph and results are very accurate as every result goes straight through the line of best fit and when the experiment was repeated, my results were very close or the same to each other.

The reason for my accurate results is because I kept the temperature under control. I did this by choosing an appropriate voltage so the wire would not get too hot and also leaving the wire to cool for a few seconds before I got my next result.

To extend this experiment, I could have made more measurements to see if they took the same path as the others.

Nina Ryner

...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. Marked by a teacher

    The factors affecting the resistance of a metalic conductor.

    4 star(s)

    The above-mentioned results occur due to the fact of how many free electrons are being conducted through the wires of different lengths and areas. * In the case of length; the resistance increases as the length increases because a wire with a shorter distance will have a smaller amount of atoms for the free electrons to hit.

  2. Factors Affecting the Efficiency of a Wind Turbine

    However, the most efficient shape is the most commonly used on wind machines already. The question still remains on how to improve the efficiency of wind turbines further. STEPS TAKEN WHILE CONDUCTING THIS INVESTIGATION FROM THE BEGINNING TO THE END Safety precautions Before each experiment the following had to be

  1. An in Investigation into the Resistance of a Wire.

    the one that gives the biggest readings on the meter scale without overloading the scale. Also before starting the experiment the multi ammeter and multi voltmeter must be checked to read zero before use to ensure they read zero when disconnected or this will affect the final result.

  2. Discover the factors affecting resistance in a conductor.

    Therefore we can conclude that the wire has a resistance to the current. The greater the resistance, the more voltage that is required to move a current through the wire." There are four factors that affect resistance: 1. As the length increases, the resistance increases 3.

  1. Physics GCSE Coursework:Factors affecting the resistance of a wire

    This is assuming that the temperature is kept constant and that the material is kept constant. We can include this in our final analysis equations (of the graph and results) by adding a constant (K). Variables: Independent - Length of wire Dependant - Resistance Control - Voltage on power pack - Width of wire (SWG)

  2. Factors affecting Resistance of a wire

    The secondary sources I used to research my experiment were; the Internet, several physics websites, GCSE Physics cd-rom by DK. The two factors that I have chosen & my prediction: I have chosen wire length and the cross sectional area because they are the most effective and easiest factor to measure.

  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. Length vs Resistance

    The dependent variable is the resistance of the wire and the variable we would need to control would be the temperature because temperature would affect the results of my investigation. The wires will be used for the circuit and the crocodile clips will be used to attach the circuit wires

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