Build A Shake Torch And Measure The Electrical Voltage Produced When The Magnet Passes Through A Coil Of Wire

1510 Words Sep 6th, 2015 7 Pages
The aim of this experiment was to build a shake torch and measure the electrical voltage produced when the magnet passes through a coil of wire. Our dependent variables were the amount of magnets (length of magnet) and the amount of shakes. This was done to help us discover if there was a relation between the amount of magnets, and the induced current produced. It was to investigate if a greater magnetic field and increased amount shakes would improve the shake torches ability to light the LED faster by producing more voltage. This was what was hypothesised; from the collected data it is fair to say there is somewhat a relation between the length of the magnets and amount of shakes. The data does support the hypothesis. By doubling the magnets you are essentially increasing the magnetic flux. Hence when shaken the magnetic field would stay in the coil of wire for a longer period meaning the more electrical current is absorbed more into the copper wire which is connected to the LED , so more voltage is created to light the LED. Furthermore our data also highlighted the fact the more shakes the more voltage made. This may be due to the fact that with more shakes there will be a greater build-up of energy in the circuit board, hence the reason of the results obtained.

Although the hypothesis was supported by the obtained data, there were some out lies. It seems that as the amounts of magnets are increased the trials seem to vary more. This is clearly seen in the average…

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