FIGURE 23-7 -A Bar Magnet with Its North Pole Pointing Toward a Pointing

Multiple Choice

FIGURE 23-7
-A bar magnet with its north pole pointing toward a coil of wire with a cross-sectional area of 0.020 m² and seven turns is thrust into the coil as shown in Figure 23-7(b) . If the rate of change in the strength of the magnetic field caused by the motion of the bar magnet is 0.040 T/s, what is the direction of the induced emf in the coil of wire (when looking at the end of the coil where the N pole is coming toward you) ?

A) counterclockwise
B) clockwise
C) No emf is induced.