2- A spherical capacitor has inner radias and outer radius a and b respectively. It is filled with a dielectric of permittinty E = €0/²² Find the capacitance.

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Q: 3) As shown in Fig. 1, a balanced three-phase, positive-sequence source with VAB = 480/0° V is…

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Q: B) A surface charge with density ps = 3pz (C/m²) exists in a surface defined by p=3,0 <z<1, 30°…

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Q: . In the figure below, calculate the output voltage Vout, and the phase angle with VIN at 150 KHz.…

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Q: Explain the concept of a power grid and its importance in the distribution of electrical energy.

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Dielectric Breakdown

A dielectric is a material with low electrical conductivity and so is classified as an insulator. Dielectric materials are used to block the flow of electricity through them, allowing them to behave as an insulators. They can also be used to store electric charge or improve capacitance.Dielectrics have no free electrons for conduction because electrons are tightly bound to the nucleus. Because dielectrics contain a small number of electrons for electrical conductivity, they have a dipole. The two primary roles of dielectrics in electrical devices are insulation and electrical energy storage. An electric field polarizes the dielectric, and the polarization of the molecules allows dielectric materials to store charge.