As shown in the figure, a wire and a 10-Ω resistor are used to form a circuit in the shape of a square with dimensions 20 cm by 20 cm. A uniform but non-steady magnetic field is directed into the plane of the circuit. The magnitude of the magnetic field is steadily decreased from 2.70 T to 0.90 T in a time interval of 96 ms. What is the induced current in the circuit, and what is its direction through the resistor?
A)75 mA, from b to a
B)45 mA, from b to a
C)75 mA, from a to b
D)45 mA, from a to b
E)110 mA, from a to b

Question

As shown in the figure, a wire and a 10-Ω resistor are used to form a circuit in the shape of a square with dimensions 20 cm by 20 cm. A uniform but non-steady magnetic field is directed into the plane of the circuit. The magnitude of the magnetic field is steadily decreased from 2.70 T to 0.90 T in a time interval of 96 ms. What is the induced current in the circuit, and what is its direction through the resistor? 
A)75 mA, from b to a 
B)45 mA, from b to a 
C)75 mA, from a to b 
D)45 mA, from a to b 
E)110 mA, from a to b

Quizplus · Accepted Answer

The Answer of As shown in the figure, a wire and a 10-Ω resistor are used to form a circuit in the shape of a square with dimensions 20 cm by 20 cm. A uniform but non-steady magnetic field is directed into the plane of the circuit. The magnitude of the magnetic field is steadily decreased from 2.70 T to 0.90 T in a time interval of 96 ms. What is the induced current in the circuit, and what is its direction through the resistor? 
A)75 mA, from b to a 
B)45 mA, from b to a 
C)75 mA, from a to b 
D)45 mA, from a to b 
E)110 mA, from a to b

As Shown in the Figure, a Wire and a 10-Ω