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

Experiment to Investigate which Factors Affect the Strength of an Electromagnet

Extracts from this document...

Introduction

Experiment to Investigate which Factors Affect the Strength of an Electromagnet Introduction An electromagnet is a magnet made of a solanoid with coils of wire around it. Aim To investigate which factors affect the strength of an electromagnet. Predictions I predict that the voltage, the amount of coils and the material of the solanoid can affect the strength of a magnet. I also predict that adding more coils increases strength. See domain theory. The Domain Theory The domain theory is that all the atoms point different ways in a piece of iron. When the piece of iron is magnetised all the atoms in the iron point to north. Variables The variables are the number of coils and the strength of the magnet. ...read more.

Middle

Nail (soft iron) Heat proof mat Stand and clamp Paper clips Circuit Diagram Preliminary Experiment In the preliminary experiment I will check the circuit to see if it works. I will also check the voltage and how many coils (for start). Obtaining Evidence No. of Coils No. of Coils 10 9 20 43 30 25 40 46 50 47 60 50 70 50 80 50 90 50 100 50 No. of Coils No. of Coils 10 12 15 17 20 33 25 38 30 40 35 42 40 45 45 47 50 49 55 50 Analysing Evidence I have found simply that the more coils there are the more paper clips are attracted. ...read more.

Conclusion

Our experiment was fairly accurate except our preliminary experiment results were anomalous in some places because there was one point when we added coils and the number of paper clips went down. The variables were kept constant and the reliability of the experiment could have been improved if we could have acquired more results. The evidence is sufficient to support a firm conclusion although the nail could have been magnetised because of past experiments. The experiment could be improved by extending the time, the length wire, and the amount of paper clips. A longer nail could be included as well as using a Newton meter and better timing could also be used. To extend the enquiry I suggest looking at the voltage and other materials. Lliam Heavey Physics Coursework ...read more.

The above preview is unformatted text

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

Here's what a teacher thought of this essay

3 star(s)

This is an average piece of work. There is little evidence of true scientific understanding of magnetism. However, there is an understanding of how to undertake an investigation and how to collect and display data effectively, although caution should always be taken when using ICT to produce graphs.

Marked by teacher Kate Gardiner 01/03/2013

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

    An investigation into the factors affecting the frequency of a standing wave

    4 star(s)

    screen to read off the time period, as this can be used to find the frequency of the wave.

  2. Marked by a teacher

    refraction experiment

    4 star(s)

    > Angle of refraction: the angle between the refracted ray and the normal line. > Index of refraction: the ratio of the speed of light in a vacuum (c) to the speed of light in a different medium (v). The laws of Refraction are: 1.

  1. Peer reviewed

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

    4 star(s)

    We then switched on the power supply and set the voltage to 4V. We tested the number of paper clips the nail would pick up, each time turning the power supply off and winding the coil five more times consecutively.

  2. Free essay

    Do mobile phones adversly affect our health? - Case study

    3 star(s)

    Cancer Research UK even says that there isn't a proven link between cancer and mobile phones, and they're the leading cancer charity. -------------Comparison------------------------------------------------------------------------- There is a lot of controversy surrounding this topic. A lot of people believe that the phones will cause damage, but the opposing side proves them wrong, no matter what.

  1. Investigating the speed of travelling waves in water.

    The whole experiment will then be repeated again. This is to confirm and justify the previous results, revealing if any of the previous readings were inaccurate or reliable. A graph showing speed against the depth can be plotted. I predicted that the speed will increase as the depth increases, hence,

  2. To investigate how the depth of the water will effect the speed of a ...

    The reason for this is that in very shallow water the wave will frequently hit the bottom and in doing this will loose some of its energy (mainly due to friction) and as a result its velocity will be slower.

  1. During this coursework practical, we aim to study the behaviour of water waves at ...

    So what will happen in the tank in our practical? For water depths such as 0.5cm and 1.0cm, the water wave (produced by the dropping of tank) will scrape the bottom of the tank, but there will be a depth from where it is as if the bottom was just

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

    either the power pack can control what current it lets through or a variable resistor (which also controls what current is let through but is an extra item within the circuit). Of the two the variable resistor is more accurate.

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