• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4

# Factors affecting the resistance of a wire

Extracts from this document...

Introduction

Christiana Hahn

Factors affecting the resistance of a wire

Aim

To find out if the length of the wire affects the resistance in it.

Hypothesis

I predict that the longer the wire is, the more resistance there will be. I think this, because in a longer wire, there are more chances of the atoms meeting than in a shorter piece of wire.

Plan

I will be investigating the amount of resistance in a constantan wire of the size 36. All the factors (type of wire) will stay the same; only the length will change. I will increase by 10.

Middle

15.4

90.0

17.0

100.0

19.0

Equipment

• Multimetre (ohm metre)
• 2 wires that can be attached to the multimetre
• Size 36 wire of constantan
• 2 crocodile clips
• 1m ruler

Diagram

Method

I laid out the constantan wire across a 1m ruler and made sure there were no kinks in it. Then I got a multimetre and set it to 200 measuring ohms (Ώ). After this I collected a red and a black wire, and attached a crocodile clip to the end of each of the wires. I plugged them on the multimetre, clipped the black wire onto the beginning of

Conclusion

class="c3">40.0

7.5

6.2

10.6

50.0

9.3

8.2

13.4

60.0

11.9

10.0

16.9

70.0

14.0

11.6

19.8

80.0

15.4

13.7

22.3

90.0

17.0

15.3

24.7

100.0

19.0

16.6

27.3

Conclusion

With these results I came to the conclusion that my hypothesis is correct. The resistance of the wire is proportional to its length: the longer the wire is, the more resistance there is. My graph shows this very clearly with a positive correlation which is what I expected.

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

# Related GCSE Electricity and Magnetism essays

1. ## 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

2. ## Discover the factors affecting resistance in a conductor.

The power unit increases the simplicity of the experiment to a great degree rather than using another piece of apparatus such as the battery packs, as they are difficult to arrange and cannot supply a continuous power because the batteries could run out during the experiment.

1. ## Factors affecting Resistance of a wire

We used nichrome wires and copper wires, with one thin, one medium and one thick in each material. We found that the nichrome wire was much more resistant than copper, and that the thinnest wires also had the most resistance.

2. ## Investigation into the factors affecting the resistance of wire

they can move more freely and there is les chance of there being a bottleneck. A larger scale version of this would be lots of people trying to all rush through some narrow doors. I think the resistance will be proportional to ?

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