MAGNETICS PRELAB GIVEN: . Magnetic Compass to determine directions of magnetic fields. . Solenoid with known number of loops per length, n . A power source to produce a current / in each loop of the solenoid. The current can be varied by the power source. TASK: Develop a theory using linearization to determine the magnetic field of the Earth (BE) at Brunswick Community College given that you know (and can vary) the magnetic field of the solenoid (Bs). Step 1: Develop the Model from physics principles and then complete STEP 2 through STEP 7 in the Table below. Ensure you include a sketch