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Solar Cell

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Introduction

Experiment to investigate how the output voltage from a solar panel varies as the light intensity varies. Solar cells transferred light energy into electrical energy. Apparatus :- Lamp Ruler Multi-meter Solar panel Red and black wires As part as my investigation, I am going to measure the output voltage form the solar panel. The range we need to use is 200mV, to see if the mill volts output varies with the distance. MV stands for mill-volts; a mill-volt is 1/1000 of a volt. At first you place the meter ruler and follow on by placing the lamp at the end of the ruler where is shows '0'. ...read more.

Middle

200mm, 300mm etc. this will continue until I reach 1000mm as the ruler is a meter long. I will do this 3 times as trial but will also record the reading. This is to be more accurate in my experiment and if the results aren't the same then I will work out the average to get my final record. The rules for my experiment is so keep the same lamp in the same place and to make sure that there is the same amount of darkness every time I take the reading. ...read more.

Conclusion

The drawing on my graph defiantly shows my prediction was correct. It tells me that the further the light is from the solar panel the less the reading on the multi-meter. I think this is because the energy is being spread around the area but there is the same amount of energy being given. But the energy is just being spread around the area of the circle. If I did this experiment again I would do it more accurate. I would cover my solar panel to make sure that no other light gets through to affect my results. ...read more.

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