# Shakess Experiment

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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 …show more content…
It seems that as the amounts of magnets are increased the trials seem to vary more. This is clearly seen in the average table with two magnets and the graph where certain points seem to lie outside of the line of best fit. The is also suggested on the graph which displays the standard error bars. If we were to compare one magnet to two magnets we can see the error bar vertically is greater for two magnets. With the two magnets it has two points at 60, 80 shakes that seem to be an out lie compared to one magnet where all the points seem to increase by an even rise. From the graphs, we can say that these graphs are linear due to the r^2 values being close to 1. With one magnet the r^2 value is 0.9968 and for two magnets the r^2 value is 0.9773. These r^2 value is suggesting that the data collected for one magnet is more accurate than for two magnets as 0.9968 is closer to 1 therefore saying that voltage produced per amount of shakes is directly proportional which is proving the Faraday Law right. The line with two magnets is steeper because by increasing the length of the magnet you are increasing the length of the magnetic field that passed through the coil of wire at one particular moment which increases the voltage produced. This is advocated to be correct as seen in the graph, the slope of the graph shows the voltage produced. With one magnet it can be seen 0.4304 V is produced when …show more content…
It can be very useful in the event of an emergency. But there are also many other fields usually in the industrial industry. They are useful in area where generating energy is needed such as steam, water and wind turbines where electromagnetic generators are needed to drive the rotors (https://www.pa.msu.edu/courses/2014spring/PHY482/access/Posts14/Lec.10.06.pdf). It can also play a role in medical field as Electromagnetic Flow Meters which portray the principle of electromagnetic induction can be used to measure velocity of blood and certain fluids (electrical4u, 2011). This experiment is just touching the surface of the true value of magnetic