• 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

# An Investigation to show the change in resistance as the length of wire increases.

Extracts from this document...

Introduction

An Investigation to show the change in resistance as the length of wire increases

Introduction

I am going to investigate the change in resistance as I increase the length of wire. To keep this a fair test I am going to keep everything the same apart from the length of wire. Electric current is the movement of electrons through a conductor. In this experiment the wire will be the conductor. When resistance is high conductivity is low. Resistance is when the electrons, flow towards the positive from the negative and they collide with other atoms. They then transfer some of their kinetic energy. The transfer on collision is what causes resistance.

Prediction

I

Middle

Results

We have only recorded one set on results because we ran out of time and there wasn’t enough equipment.

Conclusion

class="c2">40

0.69

0.18

3.83

45

0.45

0.17

4.47

50

0.83

0.17

4.88

55

0.89

0.17

5.23

Evaluation

I could improve my set of results by either taking my time more and I could also do a wider range of tests and I could change I number of things like the length of wire or the thickness, the voltage etc. This would help with finding averages. During my experiment I encountered various problems with getting the current to stay the same throughout my experiment but we solved it in the end. This is why the current changes slightly half way between my results.

Conclusion

The results of my experiment show that I was correct with my predication that as the length of wire increase then so will the resistance in proportion to the length. My graph shows good strong positive correlation and I have a good line of best fit.

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. ## Investigation to determine whether the resistance of a wire increases in proportion to its ...

As the length increases so does the vibration. These increased vibrations make it more difficult for the electrons to flow through, and this causes resistance. Variables: There are several variables in this experiment they can be sub divided into three different groups of variables: Independent, Dependant and Control: Dependant: * This will be the resistance of the Nichrome wire as the length of it is changed.

2. ## I predict that as the length of wire increases, the resistance will also increase.

to the circuit while another crocodile clip can be placed on the wire as far up the wire as necessary from the other connected end. The distances will be measured as accurately as possible by using a metre stick which is split into centimetre divisions.

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