Concept:The magnetic field around a straight current-carrying conductor consists of concentric circles, and its direction is obtained using the right-hand grip rule.
Explanation:Use the right-hand grip rule with the thumb pointing in the direction of the current.
Here, the current flows downward, so the thumb points downward.
The curled fingers show the direction in which the magnetic field circles the vertical wire.
At a point due north of the wire, the magnetic field is horizontal and tangential to the circular field line.
Applying the grip rule, this tangent at the northern point points due west.
Answer:D. West
