A bar magnet is held stationary while a circularloop of wire is moved toward the magnet at constantvelocity at position A as in Figure P20.26. The looppasses over the magnet at position B and moves awayfrom the magnet at position C. Find the directionof the induced current in the loop using Lenz’s law(a) at position A and (b) at position C. (c) What is theinduced current in the loop at position B? Explain.