A cylindrical capacitor is filled with two cylindrical layers of dielectric with permittivities ε1 and ε2.
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Let λ be the linear charge density then,
The breakdown in either case will occur at the smaller value of r for a simultaneous breakdown of both dielectrics. From (1) and (2)
The breakdown in either case will occur at the smaller value of r for a simultaneous breakdown of both dielectrics. From (1) and (2)
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