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

Investigate the maximum power output of a solar cell (photovoltaic cell).

Extracts from this document...

Introduction

Planning I am planning to investigate the maximum power output of a solar cell (photovoltaic cell). As I will be using independent and dependent variables I will need to keep many conditions constant. The independent variables I could change are resistance of circuit, light intensity, colours of light and surface area of cell. My dependent variables I will need to keep constant are power, voltage and current. I have decided to change the light intensity because I think it is the biggest influential factor and it is also the one that can change the most. For example, when a solar cell is used to provide electricity to a home, it is attached on a roof. It is also the independent variable on which the whole solar cell operates. I will change the voltage of the light, and the distance away from the bulb of the solar cell. I will keep the resistance of the circuit the same by using a fixed resistor. The lamp used will always be the same lamp and no other light source will be available because I will blackout the rest of the area using black paper. ...read more.

Middle

0.9 1.1 0.8 0.9 0.0009 0.0000081 0.0081 26 1 1.3 0.9 1.1 0.0011 0.0000121 0.0121 25 1.1 1.3 1 1.2 0.0012 0.0000144 0.0144 24 1.3 1.5 1.2 1.3 0.0013 0.0000169 0.0169 23 1.4 1.5 1.3 1.4 0.0014 0.0000196 0.0196 22 1.7 1.7 1.3 1.6 0.0016 0.0000256 0.0256 21 1.7 1.8 1.4 1.6 0.0016 0.0000256 0.0256 20 2 1.9 1.6 1.8 0.0018 0.0000324 0.0324 19 2.2 2 1.7 2 0.002 0.00004 0.04 18 2.2 2.2 1.9 2.1 0.0021 0.0000441 0.0441 17 2.4 2.5 2 2.3 0.0023 0.0000529 0.0529 16 2.4 2.6 2.1 2.4 0.0024 0.0000576 0.0576 15 2.7 2.7 2.2 2.5 0.0025 0.0000625 0.0625 14 2.9 2.7 2.4 2.7 0.0027 0.0000729 0.0729 13 3.3 2.7 2.5 2.9 0.0029 0.0000841 0.0841 12 3.5 3 2.7 3.1 0.0031 0.0000961 0.0961 11 3.8 3.1 2.9 3.3 0.0033 0.0001089 0.1089 10 4.1 3.3 3.1 3.5 0.0035 0.0001225 0.1225 My table of results showing for the results I found when I changed the voltage of the light by one volt at a time (this is the voltage on my table). Voltage (v) Current (ma) Current (ma) Current (ma) ...read more.

Conclusion

I would have liked to try the experiment by firstly finding the resistance that gave the solar cell a maximum power. In this way I could have found the highest power that the solar cell would give, instead of it just depending on the light source. I would also have liked to try the experiments with different colours and watts of lights to get some more varied data, which would fit in better with real life situations. When solar cells/panels are used to provide electricity in homes, they are placed on the roofs of houses. My evidence proves the theory that the nearer the light source is to the cell, the more effective the solar cell is. Also, as the light source (normally the sun) gets darker, the cells are less effective and my results prove this theory by using different voltages. This is why many houses with solar cells should be and are placed on the roofs of south facing houses, in order to ensure the cell receives maximum sunlight. If possible I would have liked to find at least 5 sets of data in the future to back-up my investigation but I am pleased with my results and they match up with my predictions. ?? ?? ?? ?? Fiona McDonnell POWER OUTPUT OF A SOLAR CELL 01/05/2007 1 ...read more.

The above preview is unformatted text

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. Marked by a teacher

    Internal Resistance of a cell

    5 star(s)

    the chemical composition of the cell changes as the reaction inside it proceeds (P.Howson. 1999) In this experiment we will compare the internal resistance of the cells using required apparatus mentioned below. Thus internal resistances and other conductor components give a total resistance to the current of electricity in a circuit.

  2. Free essay

    Finding the internal resistance of a solar cell

    light which varies because although there is a permanent light source there is still light energy absorbed by the solar cell from the background area lighting. This can be solved by turning or blocking all background light although makes carrying out the procedure much harder.

  1. Using an LDR to detect the intensity of plane polarised light allowed through a ...

    ANALYSIS Firstly it is naturally important to be able to work out the intensity of the light as a function of the voltage that I have received. As such, I have made a larger copy of the calibration curve, which you should be able to see on the page before this.

  2. Investigation into the resistance of a filament lamp.

    Blue: 500 nm Green: 550 nm Yellow: 600 nm Red: 650 nm The wavelength of maximum emission of any body is inversely proportional to its absolute temperature. Thus, the higher the temperature, the shorter the wavelength of maximum emission. When we got a rough estimate of the wavelength at various points, we can use Wien's law to find the temperature.

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

    N The kinetic friction: 1.2N � 0.05 N Coefficient of static friction = static friction / normal reaction force = 1.4 / (0.194*10) = 0.722 (Cor. to 3 sig. Fig.) The uncertainty = 0.05/1.4 + 0.0005/0.194 = 0.0383 (Cor. to 3 sig.

  2. Is polymer electronics the future of TV screens

    This would mean that the light source could be a lot thinner and therefore more discreet. It could also be on a large sheet of substrate, so it could cover a large area, instead of having to use lots of bulbs.

  1. Sensors cwk. The aim of this coursework is to construct a potential divider circuit ...

    > Repeat the last step for each different marked point up to 200cm. > Tabulate the results and then draw graphs of them. After drawing the graphs, I will be able to calibrate the Light Dependent Resistor. Once I have drawn my graph I should end up with a 'calibration curve'.

  2. Power Output of a Solar Cell

    A small solar cell will be used in the experiment. Method The centre of the solar cell will always be placed 35cm away from the centre of the bulb. The resistance box and digital meter set to read the current will be placed in series with the solar cell.

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