A wire rod rolls with a speed of 30 m/s on two metallic rails, 2.0 m apart, that form a closed loop. The power dissipated in the resistor R and the current direction are, respectively,
A) 33 mW, clockwise.
B) 33 mW, counterclockwise.
C) 2.0 W, counterclockwise.
D) 10 W, clockwise.
E) 10 W, counterclockwise.

Question

A wire rod rolls with a speed of 30 m/s on two metallic rails, 2.0 m apart, that form a closed loop. The power dissipated in the resistor R and the current direction are, respectively,
A) 33 mW, clockwise. 
B) 33 mW, counterclockwise. 
C) 2.0 W, counterclockwise. 
D) 10 W, clockwise. 
E) 10 W, counterclockwise.

Quizplus · Accepted Answer

The Answer of  A wire rod rolls with a speed of 30 m/s on two metallic rails, 2.0 m apart, that form a closed loop. The power dissipated in the resistor R and the current direction are, respectively,
A) 33 mW, clockwise. 
B) 33 mW, counterclockwise. 
C) 2.0 W, counterclockwise. 
D) 10 W, clockwise. 
E) 10 W, counterclockwise.

A Wire Rod Rolls with a Speed of 30 M/s