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.
Correct Answer:
Verified
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