• 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

    To get as close to the true values as possible, I am using a linear treadline. I am also going to use the treadline as a basis for my conclusions on the relationship as it is the closest to the true value and therefore will be the most accurate, and will give me the most accurate value of k.

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

    Using the formula?? = ((V/I) x A)/l, and the values V=3.0V, A=0.000064m2, and??= 40m?m, we can predict the current values for different length values: PREDICTED VALUES Cross-sectional area, 0.000064m2 Resistivity, 40 micro ohm meters Length experiment Voltage , 3V Length of putty(l)

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

    The copper plates will be connected to the circuit using crocodile clips. The power source will then be turned on and a current will pass through the graphite putty with a fixed voltage of 3.5V. The current will be measured on an ammeter after it passes through the graphite putty and the measurement will be recorded.

  2. Coursework To Find The Internal Resistance Of A PowerSupply

    the gradient of the plotted results would all be constant. But as you can see from graph 1 and graph 2 below, the internal resistance of the power supply ranges from 0.35? at minimum voltage setting of 2V to 0.45 ?

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

    12 8 7.33 0.35 20.94 22.13 6 5.34 0.24 22.25 4 3.48 0.15 23.20 8 8 7.04 0.52 13.54 13.86 6 5.18 0.37 14.00 4 3.37 0.24 14.04 4 8 6.56 1.24 5.29 5.58 6 4.84 0.9 5.38 4 3.03 0.5 6.06 These results prove that the putty that I

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