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

How do you make Electro-Magnets Stronger?

Extracts from this document...


How do you make Electro-Magnets Stronger? Introduction When a current passes through a circuit it creates 2 things: Heat and a magnetic field. All things electrical create a magnetic field; this field surrounds all electrical objects in a circle like way. The magnetic field then makes the circuit/object turn into an electromagnet. An Electromagnet is something that acts like a magnet when electricity passes through it. This investigation is trying to find out how to make an electromagnet stronger and more powerful. Compared to a permanent magnet, an electro-magnet has the advantage that it can be switched on and off. However it has the disadvantage that it requires power. They have many different uses. Some of which are listed below 1. The crane in a scrap yard 2. Hospitals: to remove metal (iron, Cobalt, Nickel or alloys with these metals in) ...read more.


the number of coils the same (10 coils). The tightness of the coils. The length of the wire and I will use the same nail. For the number of coils test I will keep: the tightness of the coils the same. The same nail and the same voltage (6 volts). Method 1. Collect the equipment and set up as shown in the diagram. 2. Activate you equipment by turning on the power supply. 3. Using Gloves pick up the nail. 4. Try and pick up as many paper clips as possible using the head of the nail. 5. Deactivate the circuit and count the number of paper clips picked up 6. Record your results 7. Repeat each experiment at least 3 times for each different setting within your variable 8. When you've finished repeat steps 1-7 for another variable Safety Always wear gloves to pick up the nail as it is part of a live circuit and generates Heat and will give you an electric shock. ...read more.


I did see however that the number of coils does affect the power of the Electro magnet. I believe I proved my Hypothesis in saying that the more coils the stronger and more clustered is the magnetic field around 1 point; the Iron nail. I can see from my table and graph that for every 5 coils added another 2 paper clips could be picked up. This concludes that the best way to make an Electromagnet stronger is by raising the number of coils located around the magnetic object. Evaluation I think I preformed the Experiments to the best of my ability. I believe the results correct because there was a definite trend in them, helping me to predict further results. Also I think I preformed it well because there were an anomalous results. I think that the experment would be improved if it was preformed where there was no other electrical Instruments around to interfere with the Electromagnet. Also if the paper clips were all the exact same weight and shape. ...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)

    x 100 = 29.41% (2d.p.) Therefore, tan O = � = 0.029679 (5s.f.) �29.41% Hence, � = 0.029679 �0.008729 This error becomes very significant when calculating g. If, for example, we take the data from when O = 3.3�; g = a / (sin O - � cos O)

  2. Peer reviewed

    Energy and its uses

    3 star(s)

    to kinetic energy along the belt with losses due to heat, friction and sound, it was then converted to rotational energy with some loss due to heat, friction and sound, finally becoming stored rotational energy at the flywheel. 4. Flywheel drives dynamo to light lamps: Stored rotational energy in the

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

    conductor), creating a heating effect (during the experiment I noticed that the core got hot and the coil's insulation began to melt at higher nominal voltages). * The wires used are metals. Therefore they contain delocalised electrons, which are free to move and collide with atoms, generating heat.

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

    If you were to cut a magnet in half, it would not get destroyed. In actual fact, two magnets would be created. If you wanted, you could continue cutting the magnets in half each time therefore making the magnets smaller and smaller.

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

    A plastic beaker with a piece of metal attached to it will be hung of the magnet. 5) Sand will be poured into the beaker until the beaker falls from the magnet. 6) The weight of the beaker and sand will be taken.

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

    But they also have lines of running force through the coil. If an iron bar is placed inside a coil, it concentrates these lines of magnetic force and makes the electromagnet stronger. Pure iron does not keep any magnetism when the current is switched off, but a steel bar does.

  1. Investigating Electromagnets

    On the power pack, which I will be, using there is an option to change the voltage, which could be altered to change current with the aid of an ammeter. Number of coil's around a core: A greater number of coils in the wire/solenoid around the core will increase the strength of the field produced by that electromagnet.

  2. EMF Investigation - electricity and magnetic fields.

    * Before any power is turned on, make sure the circuit is safe to use and is connected correctly. * Turn the power on. Adjust the voltage so that the current reading is correct. * Make sure that the control factors are the same.

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