Solar Panel surface area vs Output Lab

Materials:
5x Solar panels
Voltmeter
Crocodile clips

Datatable

Conclusion

The graph clearly shows a linear proportionality between output voltage and surface area of solar panels. However the max and min lines differ quite a bit from the average value, so as far as to finding the actual slope of the proportional line is difficult because the uncertainties are so great. However we can firmly conclude that by increasing the surface area of your solar panel, you increase the output voltage.

Evaluation
There were many sources of error in this lab, the main one being the sun. Fortunately we were able to do this experiment on a sunny, cloudless day. But we noticed quickly that when we changed the angle of the solar panel to the sun, the output voltage changed too. Therefore our solution to this problem was to keep tweaking the angle each time until we got the max reading from the voltmeter and then recored that value. To fix this problem in the future we could create some contraption that would hold the solar panels at an angle.  Wind could have also affected the solar panels, as we did nothing to protect the solar panels from wind, in further experiments we could create a wall or something to block the winds interference with the solar panel. Also a more accurate voltmeter would be useful because it was hard to gauge the exact value that the solar panel gave us.