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

How Does the Number of Coils On An Electromagnet Affect Its Strength?

Extracts from this document...

Introduction


Planning

Aim

To find out how the number of coils on an electromagnet affects its strength.

Background Knowledge

An electromagnet is a temporary magnet; the magnetic field only exists when an electric current is flowing through it. A magnetic field can be produced if a wire is wrapped around an iron core and a current is passed through the wire. The strength of the electromagnet depends on how many coils you wrap round and how high the voltage is.

Variables

Amount Of Paper Clips Picked Up.

This is the dependent variable of my. I will count how many paper clips have been picked up so I can see the strength of my electromagnet I will keep the paper clips the same size to ensure a fair test

Coils

This is my independent variable. I will change this to investigate the effect it has on the strength of the electromagnet.

Current

This is a controlled variable in my experiment. I will keep the same current so that the experiment is fair.

Prediction

...read more.

Middle

Experiment1

Experiment 2

Experiment 3

Average

10

9

8

10

9

15

9

12

11

10.7

20

11

17

17

15

25

13

18

19

16.7

30

17

27

20

21.3

35

20

34

21

25


Analysis

Y= Amount of Paper Clips Supported

X = Amount of Coils

image00.png

In this graph Y increases at an almost constant rate. Showing that Y is defiantly linked to the amount of X. The more coils the more paperclips supported the less coils the less paper clips supported.

image01.png

In this graph we see the same trend as experiment one, increases at an almost constant rate. Showing that Y is defiantly linked to the amount of X The more coils the more paperclips supported the less coils the less paper clips supported, however it appears we have a anomalous result on the 3

...read more.

Conclusion

In all 3 experiments we got anomalous results in experiment 1 and 2 were the Y trend wasn’t rising as much as it should be I believe this to be because the coils were not wound round properly thus not creating a bigger electric field.

If I could repeat this experiment I would make sure the coils were wrapped round properly thus improving the accuracy of out experiment.

Improvements

If I could improve my experiment  I would take more time controlling the variables as my experiment can never be perfect there will always be something someone can improve. For example in my experiment we could of ensured that none of the paper clips were linked together.

Extending the investigation

I could investigate the difference between coils wound as a long coil, or a single compact circular coil, and see if there is any difference.

...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. Marked by a teacher

    Is Sunbathing Good?

    4 star(s)

    People use sun beds for many different reasons. "Sun bed tanning is safer than sun tanning" - False Sun beds are not a 'safe' alternative to sun tanning. Like the sun, sun beds give out UV rays which damage the DNA in your skin cells.

  2. Peer reviewed

    How does the number of coils on an electromagnet affect its strength?

    4 star(s)

    Fair test procedures: - In the investigation, we controlled three main variables to ensure that our results were as accurate as possible.- 1) The voltage We sustained the voltage to 4V all the way throughout the investigation. This would make the test more fair.

  1. is sunbathing good for you?

    note below 5 Deep brown skin Dark hair and eyes Burning is seldom; tanning is rapid and deep.

  2. To investigate how the strength of an electromagnet change as you varies the number ...

    Find out the maximum weight that electromagnet can hold with 10 turns of coils, 20 turns of coils, 30 turns of coils, 40 turns of coils and 50 turns of coils. 4. Fill in the result table from result.

  1. Our aim for this experiment is to find out a method of increasing the ...

    You can straight away see the anomalous result in the first couple of results. You can see that they are not very precise as it is clearly shows no pattern between the increase of coils and the increase of the number of paperclips it is able to pick up.

  2. What factors affect the strength of an electromagnet?

    We then got a piece of paper and we put some measurements on it which went up in 2mm, and at the point of 0 we put a line going vertical, we did this because we know where to put the nail each time so it is a fair test.

  1. Light is so common that we often take it for granted.

    A wave's energy corresponds to its amplitude. The greater the amplitude, the more energy the wave has. The energy of a light wave also corresponds to its frequency. The wavelength determines the colour of the light. Photons. In 1905, the German-born physicist Albert Einstein proposed a model of light just as useful as the wave model.

  2. The Compact Disc.

    This thin layer gives no protection form scratches or any other harm that might come to the CD. The picture above shows the layers that are involved in producing a CD. A complete CD is normally 1.2mm thick. This is very thin as there are six or seven layers that make up the CD.

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