trolls2 hw9 item5

PART A: if B(t) decreases with time

PART B: The surface can be any surface whose edge is the loop.

PART C: no matter how the field is generated

PART D: in either of the above two cases

PART E: only if the field is generated by the coulomb field of static charges or a constant current

PART F: -@DIV{(AB@Sub{1});2πR}