State and explain the clock face rule for determining the polarities of a circular wire carrying current.
State and explain the clock face rule for determining the polarities of a circular wire carrying current.

Answer:

The clock face rule states that looking at one face of a circular wire when current is flowing is:

I) The round wire’s face is the south pole when the current runs clockwise around it.

ii) When the current around the circular wire travels counterclockwise, the wire’s face becomes the north pole.