  The inversion of cause and effect in the classic description of
electromagnetism, gives rise to a conceptual error which is at the bottom of
many paradoxes and exceptions. At present, the curious fact that unipolar
induction or the Faraday Disc constitutes an exception to the Faraday induction
law is generally accepted. When we establish the correct cause and effect
relationship a close connection appears between mechanics and electromagnetism,
as does a new induction law for which paradoxes or exceptions do not occur.
Some paradoxical experiments in unipolar induction involving the unique
geometry of the spiral are described demonstrating the inversion of cause and
effect. The emf and torque of the Faraday Disc and the conducting spiral is due
to the continuous variation of the electromagnetic angular moment of the
continuous current. This experiments confirm the Lorentz Force and invalidate
Faradays Induction Law. They show how in a closed circuit emf and unipolar
torque are not produced by the variation in magnetic flux, which is constant,
but by two variations in the electromagnetic angular moment. The three possible
ways of varying the electromagnetic angular moment generated by the circulation
of the charges gives rise to the different forms of electromagnetic induction.
