• 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

  1. Lab Report " Which fuel is the better source of energy?

    Methanol has the least amount of carbons and it was able to heat the water the most. On the other hand Pentanol heated the water the lowest which was 31�C. Pentanol is the fuel which includes the largest number of carbons and it only reached the lowest temperature of heating the water in comparison to all of the fuels.


    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.

  1. Investigating Wires

    the current to pass, reducing resistance, therefore the thickness has to be kept constant. Brand of nichrome wire Controlled We will use the same nichrome brand for the entire experiment. This is because different brands of nichrome wires may have different electrical resistances per unit length.

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

    It is also possible that the there was a high content of salt deposits on the sand as the sea water contained salt and the water from the sand had evaporated leaving behind salt deposits on the sand . We could have instead used soil instead as a surface bought

  2. HL Physics Revision Notes

    Describe the de Broglie hypothesis and the concept of matter waves The de Broglie hypothesis states that all particles can act and travel as waves and have an associated wavelength defined ?=p/h, where p is the momentum of the particle, and h is Planck?s constant.

  1. Goal: To visualize an electric potential interaction between two electrodes and to sketch the ...

    Do this procedure of E1 through E7 for each of the five given plates: parallel plate, two point, point and plate, Faraday ice pail, and insulator and conductor in a field. After getting five separate pages for each plate, add E-field lines to each diagram remembering that electric field lines

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

    This idea by Kirchoff is known as the Conservation of Energy. ________________ Theory Kirchoff?s first law state that total current or charge entering a junction or node is exactly equal to the charge leaving the node, so: ?Iin = ?Iout Graphically, Here, the 3 currents entering the node, I1, I2,

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