A 200-turn cylinder of wire loops of radius 0.2 m sits on the ground. The plane of the loop is perpendicular to the line that runs east-west. A current of 100A circulates clockwise in the loop when viewed FROM the east. The Earth's magnetic field at the location of the loop is due north and parallel to the ground, with a magnitude of 3 x 10^-5 T.

1. What direction does the torque exerted on the loop by Earth's magnetic field point?

west

east

up (toward the sky)

down (toward the ground)

north

south

None of the above.

2. What is the magnitude of the torque exerted on the loop?

1.51 10-3 mN

7.54 x 10-' mN

3.77 10-' mN

1.88 10-' mN

None of the above.

3. What direction does the area vector for the loop point?

west

east

up (toward the sky)

down (toward the ground)

north

south

None of the above.