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

Factors which affect the Resistance of wires

Extracts from this document...

Introduction

Planning The problem that one is being faced with for this investigation is that of; "Factors which affect the Resistance of wires." The factors that affect the resistance of a piece of wire are: * Length * Diameter or thickness * Temperature * The type of metal. The variable I am going to do is the length of a piece of wire. The aim of my investigation is to investigate how length affects the resistance of a measure of wire. My background knowledge is as follows. * Resistance is the force, which opposes the electric current around a circuit so that energy is wasted 'pushing' the electrons around the circuit. * Resistance is measured in ohms. ...read more.

Middle

Consequently my prediction would be that; with the wire's length increasing the resistance will also increase, because the electrons will have a longer distance to travel and so more collisions will occur. Due to this, the length increase should be directly proportional to the resistance increase. To measure and record the results for this the results will be collected on a table. Length ( cm ) Volts ( V ) Current ( Amps (I) ) Resistance ( V/A ) 10 20 30 Etc... Equipment Three 9V cells, Ammeter, Voltmeter, A spool of 22 SWG, Nichrome Wire, Meter Rule, Two Crocodile Clips, Connecting Wires, Wire Cutters. ...read more.

Conclusion

To make this experiment a fair test the only thing that I'll be changing will be the wire length: The wire type (Nichrome), temperature, and diameter (22SWG) will be kept roughly the same. I will also keep the voltmeter, ammeter, and the cells the same. I will have to be careful when touching the wire, as it may be hot because the resisted energy will probably be turned into heat energy. A graph will be displayed to show the, hopeful, connection between the length of the wire and the resistance given by the wire. I will use the 10 points to mark on a graph, to see if my predicted result works, this will show in a certain pattern. ...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

See related essaysSee related essays

Related GCSE Electricity and Magnetism essays

  1. Peer reviewed

    Investigation in resistance in wires

    5 star(s)

    = 1.25 x 10^-6 ? Then I looked on various websites on the internet and found that the actual resistivity of nichrome was: 1.1 x 10^-6 ? Now if I convert these two into numbers I get: Resistivity of my wire: 0.00000125 ? Actual resistivity of nichrome wire: 0.0000011 ?

  2. Resistance and Wires

    See Graph on the next page The graph shows the relationship between the length of nichrome wire, and its resistance. Length (cm) is plotted on the 'X' axis as the independent variable and on the 'Y' axis is the resistance (ohms)

  1. Investigation on Photovoltaic Cells

    In my graph there are four range bars; this is where the there was a difference in the reading on the voltmeter. The spread of the range bars is fairly small. The reason for these slight differences in results could be because I could have moved the wires slightly or

  2. Resistance of wires

    noted the results, and then attached a 100cm long copper wire after that (increasing by 50), and noted the results again. Length Resistance 50cm 4.213? 100cm 8.347? These results were more understandable and easier to figure out by the plotted graph, and would be more logical to prove that resistance

  1. Resistance of Wires

    that the electrons will find it harder to pass because the electrons will have further to travel, and it is more likely that the electrons will have collisions with the metal ions. This increases the resistance. If the length of the wire doubles, the lattice structure will also double.

  2. Investigate one or more factors affecting the resistance of metal wires

    in the metals cannot collide with as many electrons so there is less resistance. Doubling the area of cross-section of the wire will halve the resistance. In other words, the resistance of a wire is inversely proportional to its cross-sectional area as long as the length of the wire is constant.

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