Multiple Choice
As shown in the figure,a wire and a 10-Ω resistor are used to form a circuit in the shape of a square,20 cm by 20 cm.A uniform but nonsteady magnetic field is directed into the plane of the circuit.The magnitude of the magnetic field is decreased from 1.50 T to 0.50 T in a time interval of 63 ms.The average induced current and its direction through the resistor,in this time interval,are closest to 
A) 63 mA,from b to a.
B) 38 mA,from b to a.
C) 63 mA,from a to b.
D) 38 mA,from a to b.
E) 95 mA,from a to b.
Correct Answer:
Verified
Correct Answer:
Verified
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