PROBLEMS TO BE WRITTEN UP AND TURNED IN AT RECITATION

     These problems are due at your first recitation meeting after Wed 04/06.
     Each problem should be written on a single sheet of paper (front and back), 
     or if multiple sheets are used, staple them together.  For full credit,
     the work must be neat, with clearly labeled diagrams.  The labels must
     be in BOTH words and symbols.  For each part of the problem, you must 
     BRIEFLY explain your strategy in words, as well as neatly showing your 
     physics equations and math, with proper units. 


              Wolfson Chapter 30 problem 48, p. 800. (10 points)


              FISHBANE - CHAPTER 30  (15 points)

         32.  Consider a toroidal solenoid with a square cross
              section, each side of which has length 3 cm.
              The inner wall of the torus forms a cylinder of
              radius 12 cm.  The torus is wound evenly with
              200 turns of 0.3 mm-DIAMETER copper wire.  The
              wire is connected to a 3.0 V battery with
              negligible internal resistance.  (a) Calculate
              the largest and smallest magnetic field across
              the cross section of the toroid.  (b) Calculate
              the absolute value of the magnetic flux through 
              one turn of the toroidal solenoid.  (c) Do you 
              need to cool the solenoid?  (Calculate the heat 
              created per second when current is flowing.)