A circular loop of radius a and two long parallel wires lie in the same plane. Each wire is distance d from the loop centre. The loop and wires carry the same current I; the loop current is counterclockwise as seen from above.
Physics · Magnetic effect of current
A circular loop of radius a and two long parallel wires lie in the same plane. Each wire is distance d from the loop centre. The loop and wires carry the same current I; the loop current is counterclockwise as seen from above.
Sub-question 1
For d≈a, the net field on the loop axis is zero at height h. Which option is correct?
Options
Sub-question 2
For d≫a, after the loop is rotated 30° about a diameter parallel to the wires, with opposite wire currents, the torque magnitude is:
Options