As shown in the figure, a wire and a 10-02 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 X X X 20 cm X X X www 10 Ω X X X 63 mA, from b to a.. 38 mA, from a to b. 38 mA, from b to a. 95 mA, from a to b 63 mA, from a to b. 20 cm b 3
As shown in the figure, a wire and a 10-02 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 X X X 20 cm X X X www 10 Ω X X X 63 mA, from b to a.. 38 mA, from a to b. 38 mA, from b to a. 95 mA, from a to b 63 mA, from a to b. 20 cm b 3
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Transcribed Image Text:As shown in the figure, a wire and a 10-2 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
20 cm
X X X
X X
www
10 Ω
X X X
63 mA, from b to a.
38 mA, from a to b.
38 mA, from b to a.
95 mA, from a to b
63 mA, from a to b.
20 cm
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