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Investigating Resistance

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Introduction

Investigating Resistance

Resistance is a property of a substance that conducts electricity. Resistance opposes the flow of electricity through conductors and it depends on the PHYSICAL NATURE of the particular conductor.

In this investigation I must investigate how one of these physical facts affects the resistance.  I will split my investigation into four parts, I will firstly plan my investigation. This will allow me to explain how I will carry out my investigation and predict what I think will happen.

The second part of my investigation will be the obtaining part. To complete this I must carry out my investigation and record the results. I will then be able to say if my prediction was correct.

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Middle

6.08

60

0.21

1.52

7.23

70

0.18

1.6

8.89

80

0.16

1.61

10.06

90

0.14

1.53

10.92

100

0.13

1.6

12.3

Second set will now be recorded before finding the eventual average

Results below are Second set recorded

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Conclusion

Temperature

Resistance results 1

Resistance results 2

Average Resistance

CM

(Ohms)

(Ohms)

(Ohms)

10

1.53

1.03

1.28

20

3.29

3.21

3.25

30

3.57

4.75

4.16

40

4.82

6.75

5.78

50

6.08

8.12

7.10

60

7.23

9.54

8.38

70

8.89

11.26

10.07

80

10.06

12.76

11.41

90

10.92

14.66

12.79

100

12.3

16.61

14.45

I will now go on to plot the graph before recording my conclusion.

Conclusion

After recording my results and plotting the graph I can say that my prediction was correct. This shows that resistance is greater the longer the wire is because there will be more atoms for the electrical charges to hit the atoms and get slowed down. From what my results say I am willing to predict that if I had a thicker piece of Nichrome say 0.37mm thick then the resistance would be even greater because not only will the length give more resistance but now that it is thicker will mean there will be space for more atoms.

This will

...read more.

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

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