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A cylindrical capacitor is filled with two cylindrical layers of dielectric with permittivities el and e2. The inside radii of the layers are equal to R1 and R2 > R1. The maximum permissible values of electric field strength are equal to E1m and E2m for these dielectrics. At what relationship between a, R, and En, will the voltage increase result in the field strength reaching the breakdown value for both dielectrics simultaneously? |
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