• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Aim- To investigate the affect of changing the length of wire of resistance.

Extracts from this document...

Introduction

Science Coursework Planning > Title- Resistance of a wire > Aim- To investigate the affect of changing the length of wire of resistance. > Apparatus- * Crocodile wires * Wires; Copper, Aluminum * Amp meter * Volt meter * Battery > Method- 1) Attach your wires, crocodile clips, amp meter, voltmeter and battery as shown in the diagram above. 2) Turn on power of the battery 3) ...read more.

Middle

Aluminum will have a higher resistance because it is not such a good conductor and is not usually used for conducting. Observation > Result table Aluminum Length (cm) Volts Amps Resistance (?) 40 0.39 0.36 1.08 30 0.34 0.31 1.1 20 0.29 0.16 1.81 10 0.16 0.14 1.14 Copper Length (cm) Volts Amps Resistance (?) 40 0.38 0.43 0.88 30 0.31 0.28 0.85 20 0.21 0.17 1.23 10 0.2 0.09 2.2 > Analysis Aluminum Copper > Evaluation This experiment was very limited and could not find enough data on the experiment and is therefore not very accurate. ...read more.

Conclusion

Silver has the lowest resistance of all metals but is very expensive, that is why copper is used. Aluminum is the fourth lowest resistance after silver, copper and gold. Aluminum is not used for electric wires because copper is cheaper and a better conductor. When we changed the lengths of the wires it seemed that the resistance became lower and the wires got hotter. This is because the electricity has to pass through less wire. The experiment could have been more accurate if I used the same amount of electricity each time. ...read more.

The above preview is unformatted text

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. ## Resistance and Wires

0.90 0.45 0.6361725 63.6172 0.21(ohms) 1.20 0.60 1.1309733 113.097 0.16(ohms) The graph of area and resistance shows the relationship between the area of wire and its resistance, only when the wire is nichrome as used in this experiment. The graph indicates a similar pattern to the graph measuring diameter and resistance.

2. ## How does changing the length affect the resistance of a wire?

easy method and should be repeatable, giving accurate and reliable results each time. I think that as you increase the length of a wire the resistance of the wire will increase. I think this because, although there are more vibrating positive ions in a longer wire to impede the electric

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