As shown in the figure, a wire and a 10-? resistor are used to form a circuit in
ID: 1270431 • Letter: A
Question
As shown in the figure, a wire and a 10-? 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) 95mA, from a to b.
B) 63mA, from a to b.
C) 38mA, from b to a.
D) 63mA, from b to a.
E) 38mA, from a to b.
FIGURE: http://virtualcampus.pupr.edu/courses/1/WI-11-SCIE2450-07-SJU/ppg/F3T3Wi110212121525/f1q85g1.jpg
Explanation / Answer
C) 38mA, from b to a.
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