ENERGY AMPLIFICATION

[citfta]

I believe it is the motor and as you added including the controller.  The motor speed is going to directly affect the operation of the whole system.  If the motor was turning too slowly then cap L would get charged to the point the motor would stop.  If the motor is turning too quickly then cap L wouldn't have time to absorb much charge at all and therefore there would be very little high voltage generated by current going through the primary M.  If we can get the motor speed just right then we can probably reach a resonant condition between M and L which would lessen the current draw from the source.

Carroll

[citfta]

The cap gives us a way to apply an alternating current to the primary coil M.

[web000x]

The correct answer is


B.  cap


Everyone I have asked got it wrong.....  Why do I consider the cap the fulcrum of the system?

Because it is the storage device that contains the primary field?  That field being dielectricity.  Magnetism seems to be an effect and not so much the cause..


Dave

[leonelogb]

I think it is because the cap is coil bifilar.

_{Tesla; My present invention has for its object to avoid the employment of condensers which are expensive, cumbersome and difficult to maintain in perfect condition, and to so construct the coils themselves as to accomplish the same ultimate object}

[gyulasun]

Well, there can be another aspect of the cap: its reactive current does the job i.e. produces the ozone between its plates.
And reactive current in an LC tank circuit can be Q times the input current to the tank, a bonus from the end product point of view.