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A Wire Rod Rolls with a Speed of 20 M/s

Question 53

Multiple Choice

A wire rod rolls with a speed of 20 m/s on two metallic rails, 1.0 m apart, that form a closed loop. If the magnetic field is 1.5 T into the page, the power dissipated in the resistor R and the current direction are, respectively, A) 33 mW, clockwise. B) 33 mW, counterclockwise. C) 76 mW, counterclockwise. D) 76 mW, clockwise. E) 50 mW, clockwise. A wire rod rolls with a speed of 20 m/s on two metallic rails, 1.0 m apart, that form a closed loop. If the magnetic field is 1.5 T into the page, the power dissipated in the resistor R and the current direction are, respectively,


A) 33 mW, clockwise.
B) 33 mW, counterclockwise.
C) 76 mW, counterclockwise.
D) 76 mW, clockwise.
E) 50 mW, clockwise.

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