Multiple Choice
A long straight conductor has a constant current flowing to the right. A wire rectangle is situated above the wire, and also has a constant current flowing through it (as shown in the figure) . Which of the following statements is true? 
A) The net magnetic force on the wire rectangle is upward, and there is also a net torque on the it.
B) The net magnetic force on the wire rectangle is zero, and the net torque on it is zero.
C) The net magnetic force on the wire rectangle is downward, and there is also a net torque on the it.
D) The net magnetic force on the wire rectangle is zero, but there is a net torque on it.
E) The net magnetic force on the wire rectangle is downward, and the net torque on it is zero.
Correct Answer:

Verified
Correct Answer:
Verified
Q15: A very long straight wire carries a
Q16: A very long, solid, conducting cylinder of
Q17: A solenoid with 400 turns has a
Q18: A long straight very thin wire on
Q19: The figure shows two long, parallel current-carrying
Q21: The figure shows four different sets of
Q22: As shown in the figure, a rectangular
Q24: A cylindrical insulated wire of diameter 5.0
Q25: A solenoid having N turns and carrying
Q26: The magnetic field at a distance of