1. The problem statement, all variables and given/known data In my physics lab, we were asked to connect an unpowered solenoid to an oscilloscope and then move a magnet through the solenoid and observe the changes in voltage on the oscilloscope. First we were asked to move the north pole of the magnet into the solenoid and then the south pole. I am just confused about what the oscilloscope should show. 2. Relevant equations 3. The attempt at a solution I know that when the north pole of the magnet is placed in the oscilloscope, that the induced magnetic field points in the opposite direction, so the current would go clockwise around the solenoid. I just don't know how to translate this into what the oscilloscope should show. When i did the experiment with the north pole of the magnet, the graph on the oscilloscope goes from negative to positive. I just don't understand why this intuitively happens. Any help would be appreciated. Thanks!