• 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.

    * Connect circuit as shown in the above diagram. * Record the initial temperature, current and voltage at time zero as soon as the power pack is switched on. * Record the temperature, current and voltage every minute for fifteen minutes. Switch the power pack off and continue recording the temperature every minute for a further fifteen minutes.

  2. A2 Viscosity investigation

    The limitations involved take into consideration what was a pretty poor procedure overall. Although he method was fine and effective some things could not be helped such as the temperature which was highly inaccurate thus meaning the values stated have an error value of +or-5�C as the temperature was read

  1. physics sensor coursework

    In the averaged graph shown above, there is only one anomaly, which is the value at 200 lux. This can be caused by a variety of factors. These may involve a change in the external environment, such as the humidity in the surroundings or the temperature.

  2. A coursework on sensing temperature with voltage.

    The thermistor is inserted into the hot water and the voltage across it is measured for a temperature (t1) of 90 degrees. The varying voltage across the thermistor is measured as the temperature falls at 10-degree intervals. The experiment is repeated and a second set of readings obtained.

  1. Relationship between the current and voltage.

    E = V x I x t Energy = Voltage x Current x time E = VIt Preliminary Experiment Results Pd. (v) Current (I) 0 0 0.45 0.23 0.52 0.26 0.58 0.28 0.8 0.4 1.0 0.49 1.35 0.63 1.55 0.74 1.8 0.89 The results from this experiment tell me that when the resistance is kept constant, the (V, I)

  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.

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

    + (1 x 10-7) I = 1.001 x 10-4A Therefore the resistance that should be obtained from the meter readings is as follows: R = 49.95? At the start the resistance I specified on the variable resistor was 50?. The reading calculated from the theoretical work above is 0.05?

  2. Investigating how temperature affects the resistance in a wire

    on the resistance) -3 DC 3 Volt batteries (used to provide electricity (volts and amps) into the circuit) -Selotape (used to stick the two wooden splints with the steel wrapped around them together) -One 250ml-measuring cylinder (used to contain the water used for the water bath and the steel wrapped around the wooden splint)

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