Generator Experiment

We used a flashlight with a coil inside as a generator. We connected the flashlight to a voltage probe, then the voltage probe to the computer.
We recorded the voltage obtained with 0 shakes while 30 seconds. We have done again the same, but this time we shaked the flashlight at different rates of shakes, and counted the number of shakes. We did two more trials.
First trial :
0 shake ==) 0.181V
Second trial :
29 shakes ==) 0.372V
Third trial:
68 shakes ==) 75.322V

We opened the data sheet on an excel file. We took the sum of square (ssq) of the voltages obtained for each case, then we drew the graph of ”ssq of voltage Vs number of shakes”. Here is the graph we have got so far :

Conclusion:
The voltage increases with the number of shakes (energy).
At the end of the experiment the flashlight was lighting; it has been charged.