Multiple Choice
Field due to circular loop: A ring with a clockwise current (as seen from above the ring) is situated with its center directly above another ring, which has a counter-clockwise current, as shown in the figure. In what direction is the net magnetic force exerted on the top ring?
A) upward
B) downward
C) to the right
D) to the left
E) The net force is zero.
Correct Answer:

Verified
Correct Answer:
Verified
Q65: Circular motion of charges: A proton is
Q66: Direction of magnetic fields: A vertical wire
Q67: Velocity selector: The figure shows a velocity
Q68: Force on moving charges: Ions having equal
Q69: Solenoids: A solenoid is wound with 970
Q71: Solenoids: A solenoid of length 18 cm
Q72: Field due to a long wire: A
Q73: Biot-Savart law: A point charge Q moves
Q74: Circular motion of charges: An alpha particle
Q75: Field of a long wire: As shown