Magnetic Field of Two Current-Carrying Wires · PhysicsBowl 2017 #33
Physics · electromagnetism
Problem
Two long wires are fixed in space so that the conventional current in the left wire (2 A) comes out of the plane of the page and the conventional current in the right wire (3 A) goes into the plane of the page. In which Region(s) is there a place on the x-axis (aside from infinity) at which the magnetic field is equal to zero from these currents?
[Figure: Diagram showing two wires with currents and three regions labeled I, II, and III]
(A) Only in Region I
(B) In both Regions I and II
(C) Only in Region II
(D) In both Regions I and III
(E) In both Regions II and III