A triangular loop lies in the x-y plane forming the closed patch C connecting the points (0,0,0), (2,0,0), (0,2,0) and (0,0,0), in that order. A magnetic field B = Bote-t2 exists in the region, determine whether the induced emf around the closed patch C at t = 1(s) is positive, negative or zero, where B, is positive constant. (6 Marks)