Consider a solenoid of N=5000 turns, radius 3cm and a length 1m.
a.) For a current of 4A, what is the magntic field magnitude and direction at a location 1cm below the center line of the solenoid near the center of the solenoid?
b.) How much magnetic flux passes through the inside of the solenoid?
c.) Suppose the current decreases so that the magnetic field, B, in the solenoid collapsed in .2s. what would be the average back end creates in this situation?