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

Investigating the factors which affect the electrical resistance of a wire.

Extracts from this document...


Investigating the factors which affect the electrical resistance of a wire

Science Theory

Resistance is the components of an electrical circuit producing a blockage for electrons.

In my investigation I intend to vary the length of the wire.

I shall measure the resistance using a amp meter and a voltmeter, and then divide the voltage by the current.


I think that if I lengthen the wire then the resistance will increase.

Scientific Knowledge

I think the resistance will change in this way because it takes more energy for an electron to travel down a longer wire because there are more atoms for them to collide with.

...read more.








In order to keep my results reliable I shall keep the current the same through out the experiment, I will use the same piece of wire and keep the circuit set up the same.

To ensure safety for myself and others I shall make sure that equipment is used properly and that the wires are not in a position to trip people.


Length (cm)

First Voltage (volts)

...read more.


This agrees with my original prediction.


I took my results using the same apparatus and made sure the wire was the correct length.  I made sure the results were reliable by taking them twice.  I think my results were good enough for me to draw an accurate conclusion from.

The investigation would have been better if the power source was constant, using a battery pack means that the current could decrease through out the investigation as the batteries wear out.  To get better results I would use a bigger range of wire lengths.

...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

See related essaysSee related essays

Related GCSE Electricity and Magnetism essays

  1. Investigation into the factors which affect the Electrical Resistance of a length of wire.

    So a long strip of wire will have a high resistance and a short wire will have a low resistance. From the book "Physics, by Tom Duncan" "A long thin wire has more resistance than a short thick one of the same resistance."

  2. An Investigation into the factors that affect the electrical resistance of a wire

    It would also be correct to assume that as the temperature of the wire increases the resistance will also increase. At higher temperatures the mobile electrons will have more energy, and so will be moving at an increased speed therefore increasing the possibility of collisions.

  1. An investigation into the factors which affect the electrical resistance of a length of ...

    & Length of cross sectional area of the metal conductor. In a metal the atoms are packed tightly together in a regular pattern. The tight packing causes outer electrons to get separated from their atoms, resulting a lattice of irons in sea of free electrons.

  2. "Are rechargeable batteries more economical than alkaline batteries?"

    This would make the use of rechargeable batteries less desirable. Another alternative is to keep extra sets of batteries that will push the cost to be much higher. Therefore, unless it is obviously more economical to use rechargeable batteries, it would be unnecessary and could cause a lot of hassle,

  1. What Factors Affect the Resistance of an Electrical Conductor?

    This would cause the flow of electrons to be slowed down to enable all of the electrons to be able to pass through the wire. There will also be more collision occurring. Not just between the atoms and the electron, but collisions between the electrons and other electrons.

  2. An investigation into the factors that affect resistance.

    I chose not to use the nichrome wire because it is effected by heat. This is because if I chose this wire then it would not be a fair test as the wire is affected by heat and will not give me good results.

  1. Investigating Factors Which Affect Electrical Resistance

    as heat. As the temperature increases, so does the resistance because the more heat energy received by the particles in the metal wire, the more they vibrate, and so the harder it is for free electrons to move through the wire.

  2. What factors effect the electrical resistance of a wire?

    resistance of a wire and then I will choose to look at 2 of these experimentally to see how they actually effect the resistance of the wire(s). 1. The Thickness of the wire. I expect/ predict that the resistance of the wire will decrease as the cross-sectional area of the

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