ABSTRACT
The high-frequency alternating current frequency is determined, conducting plate thickness and resistivity are constant, K2 = −πfdr h /ρ If BaM ar and ar are setting the proportional relationship: If C3 and C4 are of two concentric circles, their projection is the internal projection of C2, r3 is the radius of C3 S3, and S4 are the projection area of C3 and C4, S5 = S3 − S4, BaM3, BaM4, BaM5 are the induction amplitude. The projection of the induction is the size of the radius, which is a monotone increasing function, BaM4 < BaM5, So S4 and S5 flux on the projected area equal to the flux of S3 on the projected area.
