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

Energy and Power of Electric Circuits and Electrochemical Batteries:

Extracts from this document...


Robert Fox

5 May, 2007

Group 4

Energy and Power of Electric Circuits and Electrochemical Batteries:

Planning A:


Electrical energy is very important for the human race and the everyday life of most people because energy is being used all the time and it is mostly electrical energy and with that most energy is also transformed into electrical energy or some variant of such as nuclear energy etc. therefore it is needed and most important to understand electricity in the everyday world but more specifically the use of batteries which can be shown through simple circuit board set ups. A battery has both a chemical and physical component to them. This is different from battery to battery e.g. electrochemical batteries (there is a transfer of electrons to ions)

...read more.


 + Sn+2

Pb+2 + 2e- -> Pb


Mg -> 2e- + Mg+2

Cu+2 + 2e- -> Cu


Zn -> 2e- + Zn+2

Fe+2 + 2e- -> Fe


Mg -> 2e- + Mg+2

Fe+2 + 2e- -> Fe


According to the data the lowest voltages are of the Pb and Sn and the highest ones being Mg and Cu (half cells) for the lowest power expected there needs to be a very low enthalpy and for the highest, a high enthalpy respectively. This means that as the temperature is increasing the particles in the metal start to move faster and making the energy move faster therefore increasing the power. We can also alter the material and thus there will be a change in amount of free electrons.

...read more.


A salt bridge2 x 100ml beakers

The Circuit:

  • Ammeter
  • Hot plate
  • Thermometer
  • 1.0 mol Strips of Magnesium, Iron, Copper, Zinc, Lead and Tin
  • Wires
  • Voltmeter


  1. Keep the surroundings constant (pressure and temperature)
  2. Next make a Galvanic Cell by Pouring 50 ml of 1 M ZnSO4 into one beaker and 50 ml of 1 M CuSO4 into another.
  3. Put Zinc and Copper into corresponding beakers
  4. Connect the beakers with a salt bridge
  5. Measure the voltage and the current (voltmeter, ammeter) by attaching  them to the metal strips
  6. Calculate the power
  7. Repeat steps 1 to 5 but change the metals and sulphates according to the data table in hypothesis.
  8. Build a circuit (using wires and a constant power source)
  9. place a strip of  1 mol Magnesium in the middle of the circuit and attach it
  10. Calculate the power
  11. Raise the temperature by 10º C
  12. Calculate the enthalpy
  13. Find the power
  14. Repeat the process from step 10  14  another 4 times
  15. Record data

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Physics essays


    Label them with numbers 1-9. 2. Set up the circuit diagram as shown in the diagram below. 3. Set the range of the voltmeter in "0-20V", and set the range of the ammeter in "0-20A" 4. Connect wire number 1 in the circuit.

  2. Investigating Wires

    This is simply because the resistance of the wire will change due to the length of the wire being varied. Controlled (In order for the experiment to be fairly executed, some key variables need to be controlled) Variable Type of variable How and why will it be controlled?

  1. hydro power

    �0.0005 S2 (m) �0.0005 S3 (m) �0.0005 S4 (m) �0.0005 S5 (m) �0.0005 Average S (m) �0.0005 Error in S (m) (Avg S)^2 (m^2) Max Of S (m) Min Of S (m) (Max of S)^2 (m^2) (Min of S)^2 (m^2) Error in S^2 (m^2) 0.566 0.160 0.165 0.163 0.163 0.165 0.1632 0.0025 0.0266 0.165 0.160 0.0272 0.0256 0.00008 0.775

  2. Experiment on looking at enthalpy of solutions

    Ratio= (5.4/33.5):(180/18) Ratio= 0.1:10 Q=MC?T Q= (180/1000)*4.2*2.6 Q= 0.18*4.2*2.6 Q=1.9656 KJ ?H= Q* (1/# moles of solute) ?H= 1.9656*(1/0.1) ?H= 19.7 KJ/mol Time (s) Temp. 1 (C) Temp 2. (C) Average Temp.(C) Max.Temp.(C) Min.Temp.(C) ?T 0,00 17,40 17,40 17,40 17,40 14,80 2,60 1,00 17,30 17,40 17,35 2,00 17,20 17,40 17,30

  1. World Energy resources

    Nuclear reactions take place in a machine, where they produce their energy, that is called Nuclear reactors. The fuel of a nuclear reactor is typically Uranium-235 which is 0.7% of the uranium 238 (natural Uranium). The more neutrons that are present in the nuclear reactor the more fission will produce thus more energy would be gained.

  2. HL Physics Revision Notes

    Construct a ray diagram for an astronomical telescope with the final image at infinity (normal adjustment) P162 State the equation relating angular magnification to the focal lengths of the lenses in an astronomical telescope in normal adjustment M=f0/fe Length of telescope = f0+fe Aberrations: Explain the meaning of spherical aberration

  1. How does the sinkage depth of a tyre affect its rolling resistance ?

    be stated that the primary cause that has affected the rolling resistance by the tire due its sinkage depth is the compressibility of the sand and the elasticity of the tire . The compressibility of the sand or compaction resistance is usually produced in this case by the work done

  2. Experiment to show the application of Kirchhoffs Voltage Law & Kirchhoffs Current Law in ...

    noting the direction of all the voltage drops, either positive or negative, and returning back to the same starting point. It is important to maintain the same direction either clockwise or anti-clockwise or the final voltage sum will not be equal to zero.

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