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

Practical Assessment for Physics: Investigating the Resistance of Conducting Putty.

Extracts from this document...

Introduction

Practical Assessment for Physics: Investigating the Resistance of Conducting Putty Possible Variables: Thickness, Length, Temperature. Variable to be investigated: Length as it is the most reliable way of creating a fair test. Aim: To see how the variable lengths of the conducting putty will affect the resistants in the circuit. Prediction: I predict an increase in the length of the putty will increase the resistants in the circuit. This is because there is a bigger area for the charges to travel through, with less chance of a collision. I came to this conclusion of my prediction by collecting evidence from an 'AS/A2 Physics' book by Wendy Brown. ...read more.

Middle

(3) I then placed the tip of the copper on each ends of the 1cm putty coil as shown in my diagram. As I was doing this I recorded the voltage reading into a table and disconnected the copper from the putty. I repeated this ten times and collected ten voltage readings for this length of putty. But between each reading I waited for a few seconds so that the temperature would be the same at each reading making it a fair test. I then did exactly the same for recording the results form the amp meter. (4) I repeated stage (3) for the other lengths of putty to have all the readings in my results table. ...read more.

Conclusion

5.63 8 4.36 4.65 5.13 5.36 5.57 9 4.25 4.73 5.06 5.35 5.65 10 4.29 4.70 5.09 5.36 5.62 AVERAGE 4.315 4.725 5.084 5.349 5.596 CURRENT READING Reading No. 1cm 3cm 5cm 7cm 9cm 1 0.44 0.24 0.18 0.13 0.11 2 0.39 0.25 0.17 0.11 0.09 3 0.42 0.23 0.19 0.11 0.10 4 0.43 0.28 0.20 0.14 0.11 5 0.44 0.25 0.22 0.13 0.11 6 0.40 0.27 0.17 0.14 0.10 7 0.41 0.28 0.19 0.12 0.09 8 0.44 0.26 0.21 0.14 0.10 9 0.43 0.24 0.16 0.13 0.11 10 0.44 0.27 0.19 0.14 0.09 AVERAGE 0.424 0.257 0.188 0.129 0.101 RESISTANTS (VOLTAGE AVERAGE DIVIDED BY CURRENT AVERAGE) 1cm 3cm 5cm 7cm 9cm 10.1769 18.3852 27.0426 41.4651 55.4059 Conclusion: Sohail Deen 11H 29/01/03 1/4 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Electrical & Thermal Physics 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 AS and A Level Electrical & Thermal Physics essays

  1. Investigating how temperature affects the resistance in a wire

    the necessary adding of hot or cold water to keep the water bath at the right temperature. With varying amounts of water over the wire in apparatus A, the temperature affects different lengths of wire each time therefore giving inaccurate results.

  2. Investigating the factors affecting the size of current flowing through a length of resistivity ...

    / m Current(I) / A Current rounded to 3 d.p./A 0.02 0.24 0.240 0.04 0.12 0.120 0.06 0.08 0.080 0.08 0.06 0.060 0.1 0.048 0.048 0.12 0.04 0.040 0.14 0.034285714 0.034 0.16 0.03 0.030 0.18 0.026666667 0.027 0.2 0.024 0.024 0.22 0.021818182 0.022 0.24 0.02 0.020 0.26 0.018461538 0.018 0.28

  1. The aim of this investigation is to find out if the length of an ...

    We shall use an voltmeter to monitor the voltage across the graphite putty. Next, we shall turn off the power source and remove the copper plate from one end of the cuboid. A 1cm segment will be cut off from this end so that the length of the cuboid becomes 14cm.

  2. Does the length of a conduction putty affect its resistance?

    am investigating is an Ohmic conductor, as even when the potential difference changes, the resistance of the putty remains constant for the same length. Now that I have proved that the putty does conduct electricity in a constant manner, I can start the main experiment.

  1. To investigate the resistance of a conducting material as its length changes.

    Preliminary Experiment - to investigate the effect change of temperature has on resistance in graphite. Introduction: I know that graphite is a semi-conductor from personal knowledge; what this means in terms of resistance is that although the amount of collisions between electrons and atoms increases as the temperature increases -

  2. Coursework To Find The Internal Resistance Of A PowerSupply

    the wires of the circuit, but this could increase if the power supply was switched on continuously for a long period of time. Measurements and Readings That Will Be Taken: I will measure the length of the metal rail and split the length into eight different sections.

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