• 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
8. 8
8
9. 9
9

# An Investigation into a Factor That Affects the Resistance of a Piece of Wire

Extracts from this document...

Introduction

An Investigation into a Factor That Affects the Resistance of a Piece of Wire Skill P Planning Introduction The resistance of a piece of wire is the determined by the speed that an electrical current can pass through it. Every object that conducts electricity has resistance as no object have no resistance, although some do have very low resistances. This is due to the fact that many different factors affect the resistance. Key Factors The possible factors I can investigate are:- * Diameter * Length * Temperature * Material I shall Investigate Diameter, as it is the easiest to get accurate results with. Research Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the conductors. A current is the amount of charge that goes through any particular part of the wire at any particular time, which is caused by the movement of electrons, although it is usually measured in coulombs, which is 'electrons per second'. A resistor is a material that makes it hard for electrons to go through a circuit. ...read more.

Middle

I shall then get six lengths of constantan wire, each with different SWG (Standard Wire Gauge) ratings (22, 24, 26, 28, 30 and 32) and a length of 60 cm. I shall then attach one length of wire to the circuit using crocodile clips and pass a current of around 2 Volts through it. I shall then take down the Voltage and Amperes and repeat the experiment with a different wire. Once I have done this with all the wires I shall repeat the experiment another two times to enable me to make the results more accurate. Skill O Obtaining Evidence Round SWG Diameter (mm) Voltage (V) Current (A) Resistance (Ohms) 1 22 0.71 0.292 0.59 0.495 1 24 0.56 0.301 0.46 0.654 1 26 0.45 0.304 0.4 0.76 1 28 0.4 0.267 0.3 0.89 1 30 0.31 0.233 0.25 0.932 1 32 0.28 0.198 0.2 0.99 2 22 0.71 0.305 0.6 0.508 2 24 0.56 0.3 0.45 0.66 2 26 0.45 0.306 0.4 0.765 2 28 0.4 0.264 0.3 0.88 2 30 0.31 0.224 0.29 0.772 2 32 0.28 0.194 0.19 1.02 3 22 0.71 0.29 0.575 ...read more.

Conclusion

Also, I could only keep the voltage going through it for a short amount of time, as that would reduce the chance of it over heating. Also, if necessary I could reduce the voltage, which would also reduce the chance of the wire overheating. Also I should have repeated the experiment maybe five times to completely eradicate any wrong results. Improvements on my Method If I did redo the experiment I would use the same material and equipment. I would increase the length to 100cm and do the experiment 5 times, using a different set of wires each time so that the experiment becomes a lot more accurate. By doing this I can prove whether my hypothesis was correct or incorrect. Further Work In order to test my results even further I could repeat the experiment, but with different materials, such as copper or nickel, so that I can see if the same factors affect all wires in the same way. To do this I would use the same lengths of wire I used for Constantan (60cm) and the same Voltage (2 Volts) so that I could compare the sets of results. ...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. ## Strain Gauge

8 1.54 7.7 100 1.81 9.05 1.75 8.75 The anomalies are in red. I have also carried out a further experiment to find out how there is a general increase in voltage and resistance across a wire as it becomes longer.

2. ## Investigate how mass affects the diameter of an impact crater.

94 94 94 94 As can be seen from the table, there is not much difference between the crater sizes produced when the golf ball is dropped into different surfaces mediums. However if my intervals of height were higher then more disperse results would most likely be produced.

1. ## An Investigation into a Factor Which Affects the Resistance of a Piece of Wire

I predict that the graph of Resistance against 1/Amperes will be a straight line going through the axis as the Resistance and Amperes will be inversely proportional:- Preliminary Work In order to find the optimum conditions to undertake the experiment I did a preliminary experiment and tried it out with

2. ## Resistance - My aim in this piece of investigative work is to take one ...

Length will also get my quick and hopefully correct, useful results. Equipment: The equipment I intend to use is: * Power supply * Wires- To join the components * Ammeter * Voltmeter * Crocodile clips * Calculator * Variable length of wire * Wood block Using this equipment I will

1. ## An investigation to see whether the chosen factor affects the resistance of a piece ...

It is not just the resistor that causes resistance in the circuit, as any component in the circuit causes resistance. The 3 variables are the length, diameter of the wire, the material the resistor is made out of and the temperature of the wire.

2. ## Restoring a Volksempfnger VE 301 GW (Nazi people's radio) This is a piece of ...

After restoring the original caps this additionsal 4 uF cap must go out. Each rectifier tube can only feed a certain load, a larger cap (than original used) would smoothen better but stress the rectifier tube. 2 - Dismantling Again take notes of everything - your brain is worse than you think.

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