The day began with an ActivPhysics activity regarding magnetic fields and what increasing or decreasing variables would do to the overall results. We played around with a little graph where we changed the variables as well and we saw how the graphs of magnetism and force changed as we also increased or decreased variables.
Professor Mason then showed us what would happen to a magnet if current was turned on within the rod found in the picture below. He made us guess whether it was going to roll away or towards the magnet if the direction of the current was changed.
Below is a picture where Professor Mason asked us to predict how the force, magnetic field and current were behaving in the model above. Our results are shown in the picture below.
We then did another ActivPhysics activity regarding magnetic flux and how current direction affects the outcome of the magnetic field. We also related the flux between electric field and the change of area is equal to the charge over the constant epsilon not. We related that equation to the magnetic force one and found that the charge times the electric field plus the charge times the speed cross the magnetic field.
We then moved on to the topic of inductance defined by the symbol L. We found that the equation for inductance is mu not times the number of turns squared times the area all over the height of the coil.
We also solved an inductance problem within a closed circuit and was able to find the potential of the inductor.
Lastly, we did another ActivPhysics activity and then we decided to call it a day.
Overall, the main focus of the day was how the direction of the current affects the magnetic field and we also learned about inductance and inductors as well.
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