• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  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...


Physics coursework


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.


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.


As you can see in the diagram the variable resistor is set in series, and the voltmeter in parallel and ammeter in series.The ammeter is used to check the current is kept consistent. The apparatus we used are listed below:-

1.variable resistor




5.iron nail

6.newton meter

7.power pack

To start of with I connected everything up using crocodile clips, and also did the experiment standing up for safety reasons. Then i put the power pack up to 4v, so that it would work efficiently and things wouldn’t get too hot to handle.


For safety i will ensure im always standing up, to avoid any awkward situations which could arose. Standing up is much more easier to get out of the way of certain hazards. Secondly i will conduct the experiment on a wooden surface, to ensure if any electrical problems happen it will no be conducted. Thirdly, i will not conduct the experiment anywhere near any wet surfaces, or taps etc, this is mainly because water is very conductive of electricity, and could cause electrical shocks. Also i will not be conducting the experiment direct from the mains, because the voltage is too large, and could be very dangerous, instead i will be using a power pack, which is much more safer then the mains.

Fair test

...read more.



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.

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

    So pure iron is called magnetically soft, and is perfect to use as a core for an electromagnet. Steel stays magnetic after being in a solenoid, it is magnetically hard. This means solenoids can be used to make permanent magnets made of steel.

  2. Investigation to find out what affects the size of a shadow.

    Shadow size (cm) 40 14.875 35 11.2 30 9.025 25 7.65 20 6.4 15 5.475 10 5.05 5 4.5 Average Height from screen (cm) Shadow size (cm) 40 14.708 35 11.458 30 8.73 25 7.175 20 6.15 15 5.358 10 4.8 5 4.39 Conclusion There are many things I am able to draw out of my graphs and tables.

  1. Maglev Trains And The Technology Behind Them (magnetism)

    By using these equations we can come up with an equation that tells us the attractive force between two magnets from which we would be able to calculate the strengths of the distance apart they are from each other. In this formula F is the force, M1 and M2 are

  2. 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.

  1. What Affects the Strength of Magnetism Exerted By an Electromagnet?

    The Iron Filings will lineup along the lines of flux. Using this demonstration, we can see that lines of flux don't cross. This fact is directly linked with another rule. This rule states that there will always be a 'Neutral Point' between two repelling magnets.

  2. 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

  1. Investigating the factors affecting the strength of an electromagnet.

    * Equipment: - Power pack - Wires (connecting) - 30 paperclips - Iron nail - Wire (to coil)

  2. The physics of riding a bicycle entails many different properties.

    All bicycle riders should use caution when increasing speed as this could lead to dangerous consequences. Similar to a car that has an engine which powers it to move, so does a bicycle. That engine is me, or more simply, the power of man.

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