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

To Plan and perform an investigation to show how the strength of magnetism in an electromagnet is affected by the number of coils.

Extracts from this document...


Antony Jones Electromagnetism coursework Aim To Plan and perform an investigation to show how the strength of magnetism in an electromagnet is affected by the number of coils Prediction I predict that the more coils of wire that go around the wire, the greater the electromagnetic will be. This is because the coils going around the wire makes a small amount of electromagnetism so if there is more coils the strength of the electromagnetism will be much stronger. Scientific Knowledge putting electric current along a wire creates a magnetic field around the wire. 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. ...read more.


Variables and Fair Test Problem How it will affect our experiment How we will solve it. Top pan balances The top pan balance could e slightly out Use the same top pan balance Spilling iron filings If iron filings are missed or dropped the results wont be accurate Be careful in carrying nail to top pan balance Number of coils If there is less or more coils than there should be then the results would be wrong because the electromagnet would be stronger Count the coils 2 times Range We cannot rely on 1 set of results because of all of theses problems So I will do the experiment 3 times for each concentration. Results Coils 1stexperiment (g) 2ndexperiment (g) Average (g) 20 2.08 2.18 2.13 30 2.65 2.70 2.68 40 4.54 4.48 4.51 50 6.65 6.52 6.59 60 7.27 7.24 7.26 70 8.40 8.34 ...read more.


same gradient, between 50 and 60 coils the line Flattens out, between 60 and 70 coils the line flattens out again to the same gradient as between 50 and 60 coils. Between 70 and 80 coils the line it at its steepest. Evaluation Our experiment when quite well we ended up with some good results, this is because we used the same amount Equipment and tried not to spill and iron fillings we had one result that was not accurate at 20 coils on the second experiment this may be because we put the nail in the filings to far, also the reading on the ammeter was flicking up and down slightly so this could have affected all my results. . I could have improved my experiment by making sure we done all the experiments in 1 day and with the same equipment and ammeter. ...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

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)

    In fact, the intensity of UV rays from sun beds can be up to 10-15 times higher than that of the midday sun. "I tan safely by building my sun bed tan gradually" - False Unfortunately, using sunscreen or limiting your time on a sun bed will not protect your skin from damage and ageing.

  2. Peer reviewed

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

    4 star(s)

    When 30 coils were wrapped around the iron nail, 42 paperclips were magnetised, but when 35 coils were wrapped around the iron nail, the number of paperclips supported dropped to 36. The method of spacing the coils out evenly along the iron nail only became apparent in the reiteration of the investigation.

  1. is sunbathing good for you?

    Skin Type Skin Description REACTION TO TANNING 1 Very fair Usually lots of freckles, red or sandy hair; blue or grey eyes High burn risk; skin turns red and peels. Advised not to tan in sunlight Do NOT use a sun beds 2 Fair Possibly with freckles; blond to brown hair; blue, green and grey eyes High burn risk.

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

    When doing the varying coil wraps experiment I will do exactly the same as above but instead the number of coil wraps will be increased and the current will remain constant. It is in the varying current experiment that the variable resistor may be used (this also will be determined within the preliminary test).

  1. What factors affect the strength of an electromagnet?

    of turns 2v 6v 12v 10 2mm 12mm 18mm 20 14mm 19mm 28mm 30 19mm 23mm 32mm Analysing- conclusion My results show that the more voltage there is the further distance the paperclip can jump from and also the more coils the more distance the paperclip can jump from.

  2. Is the speed of sound affected when it travels threw different temperatures of air

    A bright flash of lightening catches your attention. Three seconds later you hear the crack of thunder. How far close were you to being fried (in meters?) 4. A tuning fork of 128hz is held over a closed end resonance tube. What are the two shortest distances at which resonance will occur at 20oc?


    buffer should be used to ensure the signal is strong enough for the next stage. Transfer Functions and the Laplace Transform: A circuit contains components with the properties of resistance, capacitance and inductance. A combination of these in a circuit or network can be represented mathematically with the inclusion of either voltage or current.

  2. Investigation into the Strength of an Electromagnet

    The fact that I took the readings at 2.5A onwards on a different day to the ones before them, I can put the anomalies down to - * Room temperature or * Distance between coils and iron core The number of coils was not altered, it was left as used

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