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

How to produce an electric current?

Extracts from this document...

Introduction

 Introduction

How to produce an electric current?

I f you take a magnet and move it in to a coil of wire the voltage has been induced to a smaller voltage to induce it to a bigger voltage you move the magnet out of the coil in the opposite direction. In a generator, a magnet rotates inside a coil of wire. This includes a current if the coil is connected to a complete circuit. Otherwise it will induce the voltage and not the current. Things you can use to create a greater current is to use

  • A stronger magnet.
  • Create more turns on the coil of wire.
  • Increase the area of the coil.

How to make a current flow?

...read more.

Middle

2 Constantan wires 1m length

Method:

1.      Arrange apparatus as shown in the Diagram:

2.      Organize wires to the following lengths:

10cm

20cm

30cm

40cm

50cm

60cm

70cm

80cm

90cm

100cm

3.      Attach the wire to the crocodile-clip leads and set voltage to 5 volts or 1.5 Volts

4.      Take the reading from the ammeter and record in results table.

5.      Repeat 3 times for each length of wire and find the average.

6.      Then work out the resistance using the formula V÷I=R

(Voltage ÷ Current = Resistance)

Preliminary

We carried out a preliminary experiment to see the other factors that could affect the experiment and also to see if we could improve any of the steps in the method. This showed that the wire was

...read more.

Conclusion

yle="width:36px;height:36px;margin-left:0px;margin-top:0px;" alt="image08.png" />

image08.png

image09.pngimage09.pngimage10.png

image11.png

image03.pngimage04.pngimage02.pngimage06.pngimage05.pngimage05.png

...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. Physics - How Electric Eels Generate and Use Electricity.

    So this makes it likely that the eel is electrically constructed so that its head and all the internal organs are insulated properly so all the current flows out and back into the rest of the body of the eels.

  2. Investigating the effect of 'length' on the resistance of a wire

    However, the results do follow a general trend which means that they are all affected by the same factors and the uncertainty is constant through out. After drawing graph No2, I found that I had a few anomalous results. In graph No1 the points were in a tight boundary, nevertheless they were still scattered.

  1. AC Generator

    * AC could be transmitted over greater distances than DC, with smaller energy losses and power stations could be fewer and conductors lighter. * Edison owned hundreds of DC power stations and all of his electrical inventions to that time ran on DC.

  2. Investigating how temperature affects the resistance in a wire

    The reason I chose to do this is that the results do not look very accurate; therefore it would make sense to produce treadlines, which show the results cancelling out to some effect of the inaccurate results. If some of the results are inaccurate they must have error margins that

  1. To find which of the circuits, shown below, are most suitable to measure a ...

    The same goes for the ammeter. Upon Investigating in various textbooks, I have found that digital voltmeters and ammeters are more accurate, so if possible I will endeavour to obtain one for use in my actual experiment. * An Ammeter to the specification mentioned on the first page on my planning: Maximum Current 2mA, Resistance 40?

  2. In this experiment I intend to find out what affect the amount of turns ...

    coil in it * The size of the turns in the coil * The voltage from the lab pack * The current as measured at the ammeter * The factor that I'm going to change is the number of turns in the coil.

  1. The electric circuitry of the average car.

    The cells are filled with an electrolyte that is two-thirds water and one-third sulfuric acid. The interaction of the plates and the electrolyte produces chemical energy. This becomes electricity when a circuit is formed between the negative and positive battery terminals.

  2. Investigating the factors affecting the size of current flowing through a length of resistivity ...

    The current is a measure of the rate of flow of the electrons. Using this model we can predict what will happen when the length of putty is doubled. Doubling the length of the putty doubles the distance one electron has to travel.

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