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

The aim of this investigation is to investigate the relationship between current and voltage for a range of components

Extracts from this document...



Physics Coursework (Resistance of a wire, Insulation)       Ms. Besford

AIM: The aim of this investigation is to investigate the relationship between current and voltage for a range of components


The key variables of this experiment are current and voltage.

Current is a flow of electrons. In a series circuit the current is the same everywhere. Ammeter is used to measure current. For electrons to flow a complete circuit is needed. In a parallel circuit the current is split between the branches. Amps (A) is the unit of current.

...read more.


        0-1 A

        0-5 V

Resistance is anything in the circuit, which slows down the flow of current. Resistance makes it more difficult for the current (electrons) to flow. High resistance means that the current gets lower. High temperature means less resistance (big current) and low temperature means high resistance (small current) E.g. When the car is driving along the track, if there are too many humps the car will slow down where as if

...read more.


        Voltage supply provides         Current

        The push.         flows

        Resistance – opposes the flow        

As current passes through resistance the resistor will get hot this is because electrical energy is changed into heat energy. The more current that flows more heat is produced. The higher the resistance means less heat is produced. This is because big resistance means less current flows through and less heat is produced. High voltage means more heating, this is because it pushes more current.


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

    I therefore recorded the values of time to the nearest second. * First I added extra lagging to my aluminium block making sure that the top of the heating filament and thermometer hole is covered to prevent heat loss. * Connect circuit as shown in the diagram above.

  2. Relationship between the current and voltage.

    experiment, the brightness of the bulb, is also classified as a dependant variable. I will investigate the relationship between the current and voltage, for a wire wound resistor, ad a light bulb, as well as the relationship between the resistance and % of light emitted by the bulb.

  1. The aim of the experiment is to verify the maximum power theorem and investigate ...

    3.88 3.88 5.84 5.84 7.81 7.81 In the experiment, we have made several assumptions: 1. Air resistance is neglect 2. The friction is evenly distributed on any surface of the sand paper (i.e. the friction should be the same over the whole sand paper.)

  2. Investigating how temperature affects the resistance in a wire

    In both graphs 3 and 4 the general pattern shows high range and high standard deviation at low temperature (high inaccuracy) and low range and low standard deviation at high temperatures (low inaccuracy). This therefore contradicts my earlier theory that the inaccuracy would increase with an increase in the temperature,

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

    I have actually plotted a graph of labelled resistance against the resistance obtained by the calculations above (graph on next page) and this is a curve. This shows that as the resistances become bigger, the value that Circuit One obtains due to the meter readings will become even further from the labelled resistance values.

  2. physics sensor coursework

    433.96 100 9.82 7.68 1278.65 200 7.98 12.57 634.84 300 7.24 13.29 544.77 400 6.71 16.36 410.15 500 5.97 17.49 341.34 600 5.24 18.07 289.98 700 4.85 18.14 267.36 800 4.35 18.67 232.99 900 3.89 18.73 207.69 1000 3.73 18.85 197.88 Set 2: Light intensity/ lux Potential difference/ V Current/

  1. A coursework on sensing temperature with voltage.

    Creativity: It should be creative, experimental, spontaneous even! These factors were taken into consideration in creating this temperature system. The result is a reasonably balanced system with adequate resolution, very high sensitivity and appropriate range, little random error (which is almost totally wiped out by the graph and averaging a set of readings), analyzed and understandable data, and

  2. Electronic Components.

    This is due to the filament resisting the current flowing through the lamp. LED A Light Emitting Diode give out light when a current passes through it. The LED must have a protecting resistor in series with it and can be connected in the correct direction for the current flow.

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