Q: A current through a horizontal power line flows in east to west direction. What will be the direction of magnetic field at a point directly below it when viewed from east end?
(a)Clockwise in a plane perpendicular to the wire
(b)Anti-clockwise in a plane perpendicular to the wire
(c)Clockwise in a plane of parallel to the wire
(d)Anti-clockwise in a plane of parallel to the wire
Correct Answer: (a)
The correct answer is (a): तार के लम्बवत तल में दक्षिणावर्त (Clockwise). Subject: Science & Technology | Sub-topic: Physics