1. The problem statement, all variables and given/known data Magnetic field in the cylindrical region with its axis passing through O varies at a constant rate x. A triangular imaginary loop ABC, with AB = BC, is lying in this region as shown in figure. The work done to move unit positive charge from A to B along side AB is: (a) r2 x (b) [tex]\pi[/tex] r2 x (c) r2/2 x (d) 3r2/4 x 2. Relevant equations emf induced in a circular loop of radius a due to time varying magnetic field = [tex]\pi[/tex] a2 x work done in moving a charge q = qV 3. The attempt at a solution Honestly, I have no clue how to go about it. Electric field is non-conservative, so we cant simply find the potential difference. When I tried to integrate E.dl , I could not find the angle between electric field and displacement. I feel pretty sure that we need to integrate, but how? A hint would be sufficient. thanks in advance.