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

Measure how the number of coils of insulated wire around the iron nail effects the amount of paper clips attracted to the electromagnet.

Extracts from this document...

Introduction

Introduction

When insulated wire is wrapped round an iron nail and the ends of the wire are connected to a battery the nail becomes capable of picking and paper clips. This is called an electromagnet. The nail is magnetised by the current in the wire. If the battery is disconnected then the iron clips will fall off. This is because most of the magnetism has been lost. The passage of an electric current along a wire creates a magnetic field around the wire. The fields are in the shape of a series of concentric rings.

The more coils used in the electromagnet, the stronger the magnet is. If there is one coil, and another is added, then the two coils have twice the strength of one.

Aims

For this investigation, I intend to measure how the number of coils of insulated wire around the iron nail effects the amount of paper clips attracted to the electromagnet.

...read more.

Middle

The experiment could be affected by varying paperclip weights so to keep the experiment fair; I will only use paperclips of the same type.  And I will the same amount of paperclips – I will use 25 paper clips as the maximum. The amount of current going through the insulated wire could also fluctuate so I will use a power pack that will keep the current the same throughout the experiment. Also I will use the same iron nail and make sure I have demagnetised it after each experiment.

To keep the experiment fair, I will do the following:

· Make sure all the paperclips are the same.

· Have the same amount of paperclips.

· Keep the current the same throughout.

· Always use the same Iron nail.

· Keep the coils equally spaced.

Prediction:

I think that the more current that goes through the wire, the greater the electromagnetic pull of the iron nail will be. Therefore it will attract more paperclips.

Method

...read more.

Conclusion

Conclusion

I have shown in my experiment that my prediction “ I think that the more current that goes through the wire, the greater the electromagnetic pull of the iron nail will be. Therefore it will attract more paperclips was correct.” My graph shows some anomalous results, this could be due to the fact that I may have not demagnetised the electromagnet properly. And I may have had an odd result in one of the experiments, which would have altered the average.

Evaluation

        I could have made a different approach to this experiment. Instead of using paperclips as a form of measuring the strength of the electromagnet by using iron filings. With this experiment I would have measured how big the circles were that had been formed by the electromagnet. Another way of measuring the strength of the electromagnet is to use a Newton Meter to see how many Newton’s can be lifted. The trouble with this experiment is that the Newton meter will be suddenly released – this will make it hard to read what the actual weight was.

...read more.

This student written piece of work is one of many that can be found in our GCSE Waves 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 Waves essays

  1. The aim of my experiment is to see what factors affect electromagnetism the most ...

    These two predictions completely relate to variables that I will use so now I can predict that as the current increases more paperclips should be picked up by the electromagnet and as the number of coils increase more paperclips should also be picked by the electromagnet.

  2. Using paperclips to experiment the effects of the strength of a magnet

    increase as the number of coils increases until eventually the electromagnet can't pick up any more pins (the point of magnetic saturation). Equipment * Mat (to protect the surface of the bench) * Magnet (part of the electromagnet) * Wire (forms part of the electromagnet and is what we are testing)

  1. An Investigation to Determine the Effect of the Number of Turns around the Core ...

    Because of the physical dimensions of the c-core, we also used a Petri dish in place of the paper cup, which proved to be more practical, and allowed for the paperclips to be more free to move.

  2. Physics investigation- Strength of Electromagnet

    The final point (4amps) is anomalous as it doesn't fit the trend we expected I have circled this with blue ink instead we used the on individual result (circled in red) which shows the expected results. One reason why the results were different is because of a anomalous result that being 13.2 this result

  1. What factors affect the strength of an electromagnet?

    because there will be not enough keys to have one per group. Plan I am going to test how my variables will influence the strength of the electromagnet. My variables will be amount of turns on the coil and the amount of current.

  2. Will increasing current in an electromagnet increase the power of the electromagnet?

    Magnets are formed when certain substances (iron, nickel and cobalt) cool. Normally when a non-magnetic substance crystallises the atoms point in random directions. Now because of the properties of the aforementioned substances their atoms point in similar directions at each end of the magnet.

  1. Strength of an Electromagnet

    This enables me to add 100g and 10g weights on without them touching the floor. I am using a Clamp to attach the electromagnet to the stand securely. 2 Connector wires are needed to supply the electromagnet with the voltage it needs to lift the weights.

  2. Investigation into the Strength of an Electromagnet

    smallest possible magnets (1/1000th of a mm), which are randomly facing different directions. No current is being applied. Here the domains are beginning to line up inside the iron core. The amount of current applied is slowly increasing.... ...And as it increases, more and more domains become turned, until eventually

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