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

In This Investigation, I am trying to find out what affects the strength of an electromagnet. I will do this by carrying out two separate experiments. These will involve changing one aspect of each experiment, whilst keeping all others the same.

Extracts from this document...

Introduction

8th May 2003

Chris Phillips

Electro Magnets Coursework

Aim:

In This Investigation, I am trying to find out what affects the strength of an electromagnet. I will do this by carrying out two separate experiments. These will involve changing one aspect of each experiment, whilst keeping all others the same.

Electro-Magnets

Electro-Magnets are caused when a current is passed through metal, causing “domains” inside the metal to face in one direction. When a metal is completely non- magnetized, all the domains within the metal cancel each other out, by connecting to each other from head to toe. When the current is passed through the metal, the domains free from their fixed positions and all face in one direction, not connected to one another, and therefore try and connect to domains in other metals close by, causing the magnet to attract another metal (See scientific theory.)

Scientific Theory.

In a non-magnetic piece of metal, domains with in it and connected together, and cancel each other out. This is what causes it to be non magnetic.

When a small amount of current is put through

...read more.

Middle

1.I will start this experiment by connecting, two insulated wires, to the Power Pack. I will then connect to end ends of the insulated wire two crocodile clips and make sure they are on securely.

        2.Before connecting the wire to the nail, I will wrap the wire round the nail, leaving open strands of the wire at each end of the nail. After doing this, I will connect the crocodile clips to the wire, and make sure connections are not loose.

        3.I can then take a piece of metal, and place it on a balance and record the weight accurately.

        4.I will then make sure the volt rating on the power pack is set to zero, and turn the power pack on.

        5.I can then turn the power pack rating up to 2 volts, and place the electro magnet over the balance with a piece of metal on, and measure how much the weight decreases with the magnet pulling the metal up.

        6.After carrying this out, and recording my results in a chart, I can repeat the process with higher voltages.

How I Will Carry Out Experiment 2

...read more.

Conclusion

zard of getting at electrical shock. I will make sure the set voltage is not high enough to make enough heat to burn my fingers when I am adjusting the coils.

How many results

I will collect 2 sets of results for each experiment, and take an average for each experiment; this will allow me to cater for problems and strange results I may encounter in one of the two tests.

Number Of Coils Around The Nail

Current Flowing Through Circuit (V)

How Much Weight Decreases (grams)

10

1

10

2

10

3

10

4

10

5

10

6

Number Of Coils Around The Nail

Current Flowing Through Circuit (V)

How Much Weight Decreases (grams)

5

2

10

2

15

2

20

2

25

2

30

2

...read more.

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

  1. Thermistor Coursework

    °C Potential Difference in Volts 5 3.90 10 3.67 15 3.15 20 2.89 25 2.73 30 2.30 35 2.00 40 1.87 45 1.65 50 1.45 The specification that I was given by the plant growing company stated that the sensor should be able to tell when the temperature drops below 20°C and when the temperature rises above 30°C.

  2. Single Phase Transformer (Experiment) Report.

    The leakage flux largely determines how good the transformer is at maintaining its voltage load, so it is essential to minimise it. With the load being added, the transformers effectiveness decreases and produces more leakage flux, therefore producing a bigger difference between the voltage without load and the voltage with load.

  1. The aim of my investigation is to determine the specific heat capacity of aluminium.

    The thermometer was placed half way between the centre and edge of the block, however this does not produce a value for the average temperature of the block as the temperature does not spread out evenly. Analysis: In order to the calculate the specific hat capacity of aluminium the equation, 'ItV=mc T'(5)

  2. Free essay

    Resistance of a wire

    50mm and 0mm where they seemed to have a huge difference in resistivity compared to other distances. This is expected but not to the scale that it occurred. The results we got could have been through human error in testing.

  1. Investigating how temperature affects the resistance in a wire

    3. Having placed 'apparatus A' in the 250ml-measuring cylinder attach the wires from 'apparatus A' directly into the multi-meter. 4. Turn on the multi-meter and make sure that it is recording the appropriate measurement (i.e. ohms) and that it is functioning properly.

  2. Investigate the relationship between electromagnet strength and amount of current flowing through the wire.

    Now, I will explain my method of measurement. The idea behind the experiment is very simple; to add masses of 50g and 100g to an electromagnet at a certain current (in Amps) and record the mass that the electromagnet could hold and then to draw a graph of mass against current and analyse its shape.

  1. Characteristics of Ohmic and Non Ohmic Conductors.

    Intrinsic semiconductors are elements and compounds that are semiconductors. Examples include Silicon and Cadmium. When they are in a solid state, the silicon atoms form a covalent bond among themselves to form a lattice. Since they form a covalent bond, they will not conduct electricity as there are no free electrons that will be used to carry the current.

  2. How does changing the distance from a light source affect the power output of ...

    The exponential curve from graph 2 fits much better through the points proving my prediction to be correct. I said the curve would be exponential because of the inverse square law (See page 3). "The more photons, the greater the imbalance of electrons on one side of the rectifier and

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