Two weeks ago, we had a new exciting experiment. The activity stated the Faraday’s law and electromagnetism. When Faraday performed an experiment with a magnet and coil, he made a specific observation. During this experiment, he found how emf is induced in the coil when flux linked with it changes. In order to achieve this observation we needed some useful materials such as a generator, voltage probe, NXT, and NXT adopter. We started by connecting the generator to a voltage probe, which in turn was connected to the NXT. Like other experiments, we could determine the voltages using an Excel sheet. My teammates and I made five trials with a diverse number of shakes. As far as I’m concerned, I believe that the interval of time that we utilized did not have an effect on our experiment because we kept the same interval on each of the five trials. After collecting all the measurements in the lab and with the aid of the Excel sheet, we made a graph to analyze the relationship between the number of shakes and the voltage output.
The experiment was made to recognize the voltage of the modification in flux because of shaking a magnet. Any change in the magnetic environment of the coil wire will immediately produce a voltage to be “induced” in the coil. No matter by how much the change is done, the voltage will always be generated. This could be clearly determined by the fact that at 0 shakes; we did not have an important modification in voltage. The greater the number of shakes, the higher is the number of voltages. The change could be originated by modifying the magnetic field strength such as moving a magnet inside a coil of wire, which was our case in the experiment. When a magnet is moved into a coil of wire, it changes the magnetic field and magnetic flux through the coil. Then, a voltage will be generated in the coil according to Faraday’s Law.
The Faraday’s Law plays a significant role in our real life applications. Some of the devices that are related to this theory are; induction stoves, tape players, metal detectors, and transformers.
http://www.electrical4u.com/faraday-law-of-electromagnetic-induction
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/farlaw.html
A good reasoning you used to explain your experiment. Your explanation was linked to the graph, so I had to look at the graph to grasp a better understanding.