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

My investigation will aim to show how the resistance of a wire is altered with the length of the wire.

Extracts from this document...

Introduction

Physics Investigation; Testing Resistances Jack Burnham 10C (2001) Planning; The Investigation: My investigation will aim to show how the resistance of a wire is altered with the length of the wire. Equipment List: For the experiment I will need; An Multi-meter / Ohmmeter, A large amount of "Constantan wire", Normal Wire, 2 Crocodile clips, Some Cardboard, A Ruler, A Wire-cutter. Prediction: I think that the length of the wire will affect the resistance. My prediction is that the longer the wire, the higher the resistance, this is also what Encarta online encyclopaedia thinks. ...read more.

Middle

Then I will affix one crocodile clip to the start of the wire, and secure it in place. Then I will have one more crocodile clip, but move it to different measurements, to test the resistance if the wire. I will record my results and analyse them. How I will make it a fair test: I will ensure a fair test by making sure firstly that the wire is very taught, and that there is no tension in it, thus making the measurements exactly correct. ...read more.

Conclusion

I think that doing this many results will ensure that I get correct, and accurate results. Diagram of Apparatus: Analysis; Results: I checked that my results were accurate by repeating them three times. My results were as follows: Wire Length Result 1 Result 2 Result 3 FINAL RESULT 20cms 1.9 1.9 1.8 1.9 40cms 4.4 3.8 3.6 60cms 5.7 5.7 5.5 80cms 7.4 7.3 7.2 100cms 9.3 9.1 9.4 120cms 11.0 11.0 11.0 140cms 12.9 12.6 12.6 160cms 14.6 14.3 14.4 180cms 16.9 16.1 16.1 200cms 18.0 17.7 18.0 I took the mean of the three results to give me the one final result. ...read more.

The above preview is unformatted text

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. Resistance of a Wire Investigation

    Take the reading from the ammeter recording both the current and the voltage. Then do the same again but use voltages of 0.2 volts, 0.3 volts, 0.4 volts, and 0.5 volts. This is so that when we work out the resistance (V/I)

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

    Step 1 Cut 50cm of the wires E22 (more than the length needed because extra wire is needed to clip the crocodile clips too). Step 2 Use a micrometer to measure the diameter of the wire. Measure the width of the wire in five different places evenly spread out on the wire and record the reading.

  1. Investigating the Resistance Of A Wire When The Diameter Of The wire is altered.

    Throughout the experiment Constantan and nichrome will be used. Constantan is used to make sure my conclusion works for all materials. The type of material will affect the amount of free electrons that are able to flow through the wire. The number of free electrons depends on the amount of electrons in the outer shell of the atoms, so

  2. Investigate the resistance of a wire when the length of the wire is altered.

    However it is hard to keep the temperature exactly the same due to fluctuations in the room temperature. A lower voltage will be used because it means a low current that will not heat up the wires. If a high voltage is used the energy would be in form of heat which would make the experiment unfair.

  1. Resistance Investigation

    The thickness of the wire in the parallel circuit affects the resistance. I will only be changing the length of the wire and not the thickness, as I only want to only want to test the length and want all other variables to remain constant, in order to finish with a fair test.

  2. Resistance in a Wire Investigation

    The lengths that I had chosen were as follows: 10cm, 20cm , 30cm ,40 cm, 50cm, 60cm, 70cm, 80cm, 90cm, 100cm. I have chosen these lengths because they are easily measured by the meter ruler and give a good range of results.

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