FIGURE 23-8 -A Bar Magnet with Its South Pole Pointing Toward a Pointing

Multiple Choice

FIGURE 23-8
-A bar magnet with its south pole pointing toward a coil of wire of cross-sectional area 0.020 m² and seven turns is thrust into the coil as shown in Figure 23-8(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 magnitude of the induced emf in that coil of wire?

A) 5.6 × 10^-3 V
B) 5.6 × 10^-2 V
C) 5.6 × 10^-1 V
D) 5.6 × 10^-4 V
E) 5.6 × 10^-5 V