Two long, parallel, straight conductors and are separated by a distance and carry…
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
Two long, parallel, straight conductors A and B are separated by a distance d and carry equal currents I in opposite directions. At which position along the line joining the conductors is the net magnetic field zero?
(a) At the midpoint between A and B
(b) At no finite point on the line joining them
(c) On the line joining them, at a point closer to conductor A
(d) On the extension of the line beyond conductor B, at a distance d from B