Question

A face of a current loop behaves as a North pole when, viewed from that face, the current flows:

Options

• Anticlockwise

• Clockwise

• In either direction — the pole does not depend on current direction

• Radially outward from the centre

Answer 1

The North pole face is identified by field lines emerging outward, which occurs when the current flows anticlockwise when viewed from that face. By the Right-Hand Thumb Rule, the moment then points out of that face.