Consider a circular Wire loop with N turns and radius a lying in the my plane and centered at the origin. a) If the loop is inside a magnetic eld With 3(1') = Burgh, where r is the radial distance from the origin and Bo is a constant with the appropriate units, then what is the general expression for the magnetic ux through the loop? (Recall that the area element for a disk can be written as dA = 27rrdr) b) Assume you now begin to vary the magnetic eld as a function of time such that 3'0\