Clock rule :
Looking at the face of the loop, if the current around that face is in the anticlockwise direction, the face has the north polarity, while if the current at the face is in the clockwise direction, the face has the south polarity.
Clock rule :
Looking at the face of the loop, if the current around that face is in the anticlockwise direction, the face has the north polarity, while if the current at the face is in the clockwise direction, the face has the south polarity.
