• 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
5. 5
5
6. 6
6
7. 7
7

In this experiment I will be investigating the factors in which affect the resistance of a wire.

Extracts from this document...

Introduction

In this experiment I will be investigating the factors in which affect the resistance of a wire.

The factors that I could change

The factors that I could change could be: -

The length of the wire as this determines how far the electrons have to go in order to hit one another.

The time the circuit is left on for because the wire can get hot and the results could fluctuate.

Whether or not the wire is coated with plastic or not.

The amount of voltage which is inputted into the circuit. If this changed each time the results would change as more or less voltage is put in. If you increase the VOLTAGE – then more CURRENT will flow. If you increase the RESISTANCE – then less current will flow.

The material used may make a difference, as there are different metals (conductors) in which I could use and different Non-metals (Insulators).

I will measure/observe . . .

Current which are measured in amps. To measure this I will use an ammeter.

Voltage which is measured in Volts. To measure this I will use a voltmeter.

Resistance. To find out resistance I will use the simple equation: -

Resistance = Voltage

Current

I will change . . .

...read more.

Middle

0.93

0.82

15

0.9

1.90

2.11

20

0.66

1.80

2.73

25

0.56

1.16

2.07

30

0.20

0.48

2.40

35

0.03

0.07

2.33

40

0.01

0.06

6.00

2nd set of readings

 Length of wire (CM) Current in Amps Voltage in Volts Resistance (ohms) 5 1.84 0.74 0.40 10 1.14 0.96 0.84 15 0.90 1.90 2.11 20 0.69 1.83 2.65 25 0.51 1.16 2.26 30 0.21 0.45 2.14 35 0.03 0.13 4.33 40 0.01 0.05 5.00

Averages

 Length of Wire (CM) 1st set of results (Resistance) 2nd
...read more.

Conclusion

My investigation was fair throughout because I stuck with the rules I had set, made sure it was perfect and that I did the timing sufficiently in the whole experiment.

I think the amount of data that I have collected is sufficient enough because it proves my theory and complies with the title. But I could of explored into another factor which could of made the results turn and see which way the resistance would turn from high to low or low to high!

If I was to change anything it would defiantly be the lengths which will be set apart more and longer to give a varied answer.

If I obtained more evidence it would defiantly be more to the part of exploring more factors so that I could see which factors affect the resistance as said in the title.

This extra evidence would make me certain of what factors change the resistance so that the answers would tell me if certain things make resistance go up or down.

...read more.

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