A current-carrying wire(or loop) behaves like a thin disc magnet whose one face is a north pole and the other face is a south pole. The polarity(north or south) of the two faces of a current-carrying circular coil(or loop) can be determined by using the clock face rule.
According to clock face rule
1:-If the current around the face of the circular wire(or coil) flows in the clockwise direction, then that face of the circular wire will be South Pole(S-pole)
2:-If the current around the face of circular wire(or coil) flows in the Anticlockwise direction, then that face of circular wire(or coil) will be a North Pole(N-pole)
According to clock face rule
1:-If the current around the face of the circular wire(or coil) flows in the clockwise direction, then that face of the circular wire will be South Pole(S-pole)
2:-If the current around the face of circular wire(or coil) flows in the Anticlockwise direction, then that face of circular wire(or coil) will be a North Pole(N-pole)