When the downward current flows in a straight v... - JAMB Physics 2019 Question
When the downward current flows in a straight vertical conductor, the direction of its magnetic field at a point due north of the wire is
A
Upward
B
North
C
South
D
West
correct option: d
At the North point of the wire, the magnetic field is due east, at a point due South of the wire, the magnetic field is due west.
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