Question

A current through a horizontal power line flows in west to east direction. What is the direction of the magnetic field at a point directly below it when viewed from west end?

• A. Clockwise in the plane perpendicular to wire
• B. Anti-clockwise in the plane perpendicular to wire
• C. In east direction
• D. In west direction

Answer 1

The correct option is A Clockwise in the plane perpendicular to wire



Using the right-hand thumb rule, we can see that the direction of the magnetic field at a point below the wire is clockwise in a plane perpendicular to the wire.