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Electromagnetic induction

Simulation of the basic principle of the "electric meter" with the movement of the platinum disk. When the two electromagnets are close and they are solicited by currents of different phase due to the reactions between the flows of the coils and the currents induced in the disk by the variation of the flow, the disk tends to move with a driving torque that depends on the value of the two currents and their phase angle.The coil you see is of a washing machine pump.