• 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
  10. 10
    10
  11. 11
    11

The aim of this investigation to see the strength of an electromagnetic by varying many variable, and seeing how this affects the performance of the electromagnet.

Extracts from this document...

Introduction

Physics coursework Aim The aim of this investigation to see the strength of an electromagnetic by varying many variable, and seeing how this affects the performance of the electromagnet. Variables there are many variables which can increase or decrease the magnetism of the electromagnet. these are the following variables:- Number of coils:- the more the number of coils the more the electromagnetism because, each coil creates a magnetic field. So the more coils the more magnetic fields thus the magnetism increases. Current:- this will increase the number of electrons going around the electromagnet therefore increasing the amount of magnetism. Distance:- the distance the electromagnetic is away from the target object will also decrease the magnetism. Type of iron core:- the material of the iron core could dramatically change the amount of magnetism. Length of nail:- The length of the nail will be a controlling factor, because the longer the nail is the more coils can be fitted around the nail, thus making more magnetic fields, and increasing magnetism. Length of wire:- The longer the wire is, the more oppurtunity for making more coils and increasing magnetism. Also the longer the wire is, and the number of coils increase, also their will be more electrons available to travel around the iron nail, therefore increasing magnetism. ...read more.

Middle

To ensure there is a fair test, all over varying factors will have to be kept constant. This includes, keeping the length of wire the same length and thickness. Also keeping the current the same so that the flow of electrons will be similar. Voltage will be determined by the power pack, and the switch will always be on 4v. The variable resistor will be used to ensure the correct amount of current is travelling through the wire. Also i will be using the same nail, so there is no chance of different length of nails, or different cores etc. The newton meter that i will be using, will be the same one for all experiments, so that the results become more accurate. Also i will ensure that it will only be a touch on the newton meter by the electromagnet, and no bias is being used. Prediction I predict that as the number of coils increase so will the amount of magnetism, because of the increase in magnetic fields. This will increase the reading on the newton meter. Also as the number of coils double so will the amount of magnetism double, increasing the amount of newtons being pulled will double. This graph shows what i will expect from my results, it is basically a line which is y=x. ...read more.

Conclusion

Also all the results on a graph were in a very strong posotive correlation. There was no outliers visible on the graph either. Also, the experiment was repeated 3 times, and a great degree of accuracy was involved to make sure there was no biases or unfair testing. Everytime we tested the same value, the results were very similar or even the same, showing that there was no chance of anonymous results. This shows the experiment was very reliable, and that it should be good enough to make a firm conclusion, that as the number of coils increases, so does the magnetism in direct proportion. Conclusion I would like to do this experiment again, and have a much larger range, to see what happens when u extrapolate outside the points which i have tested, and wanting to know if the same formulas and proportions, and correlations apply. Also i would like to repeat the testing of each value up to 5 times so the accuracy is increased even more, and instead of analysing the mean, i would like to analyse the modal values. Also i would like to see how the other factors which affect the performance of the electromagnet, actually change the magnetism, and would like to test these, also to see if there is any further, interlocking formulas etc. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Fields & Forces 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 AS and A Level Fields & Forces essays

  1. Peer reviewed

    Investigating the forces acting on a trolley on a ramp

    5 star(s)

    For example, if sin 3.3 - µ cos O = 0.025, then; g = 0.3367 / 0.025 = 13.468 (5s.f.) This is a change of nearly a 1 and a half metres per second per second from a slight change in the value of sin 3.3 - µ cos O.

  2. Peer reviewed

    paper cones investigation

    5 star(s)

    Evaluation Sources of error (in order of decreasing significance) Time to drop a fixed distance The measurement of time was the most significant uncertainty in this experiment (t = ±16%). This random error was largely due to human variation in starting and stopping the stopwatch, on launch and landing.

  1. Viscosity Experiment. The aim of my investigation will be to analyse the relationship ...

    the increase in speed, the downward force due to gravity will decrease, this is where acceleration stops. From this point the object is in terminal velocity, and will remain at this velocity, if no other force acts upon this object.

  2. Practice A2 Investigation: Measuring the torsion of wire

    However, I overcame these issues by reducing the amount of repeats to a more manageable, but still accurate, three repeats- thus improving the efficiency of my experimentation and providing me with more time to improve the method. In terms of the vertical oscillation, I managed to come up with a

  1. Investigating a factor affecting the voltage output of a transformer.

    Primary Voltage (V) (to 2 d.p.) Secondary Voltage (V) (to 2 d.p.) 0 2 1.71 0.25 3 2 1.68 0.15 6 2 1.68 0.09 9 2 1.69 0.06 12 2 1.63 0.05 15 2 1.65 0.02 0 1 0.75 0.14 0 2 1.68 0.25 0 3 2.33 0.36 0 4 3.20 0.42 0 5 3.75 0.48 0 6 4.42

  2. The aim of this experiment is to investigate what factors affect the strength of ...

    * Small nails * Scale Method: As the objective of this investigation is to study the effect of the number of coils on the strength of the electromagnet, only one factor can be varied i.e. the independent variable which in this experiment is the number of coils while the remaining factors are kept constant to ensure accuracy of results.

  1. Einstein's theory of relativity.

    nucleus is 220,000,000,000 electronvolts, providing that all its mass could be converted to energy. However, splitting the uranium nucleus, a process known as fission, releases only 0.1 per cent of the total energy content.

  2. To investigate the effect of current on the strength of an electromagnet field.

    Copper and iron have different sized ions. The larger the ions the more collisions would occur and the lesser the current would be flowing through and as a result of this varying the strength of the electromagnetic field. Increasing the percentage of iron in the magnet, increases the strength

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