A loop of conductor is at rest on a table. A magnet is brought nearby directly above the loop. What is the direction of current flow (looking from above) in the following situations?
a) The north pole of the magnet points down and the magnet is moved down
clockwise
counterclockwise
no current flows
b) The north pole of the magnet points up and the table is raised
clockwise
counterclockwise
no current flow
c) The loop of wire is rotated clockwise about its center axis
clockwise
counterclockwise
no current flow