For this experiment we took a clear plastic tube and wrapped a wire that was attached to a power supply making a coil. We started out at 1 loop and gradually increased to a max of 5 loops. We placed a magnetic field sensor inside of the tube ensuring the sensor was above/below the center of the coil. As we took measurements we found some discrepancy in the results. Therefore, the experiment was redone by Mason and the results were as follows:
After writing down the results above we calculated the ratio of the magnetic field, B, divided by NI, the number of loops times the current. We saw that around 4 and 5 loops the ration maxed out at about 3.5*10^-5 T/A. Using this value we calculated the length of wire used to compose the solenoid.
We determined that the length of the wire would have to be 0.0359 m long.
Magnet in Motion
We connected a large coil to an ammeter and were given a magnet. Using these tools we were asked to induce a current. We discovered that if you move the bar magnet in or out of the coil it induces a magnet. Thus arriving at the following conclusions:
The above 3 factors all affected the magnitude of the magnetic field.
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