2.41 A parallel plate capacitor is made of two circular plates separated by a distance of 5 mm and with a dielectric with dielectric constant of 2.2 between them. When the electric field in the dielectric is 3 x 104 V/m, the charge density of the positive plate will be, nearly

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Q: does it take for the capacitor. How long to reach 70 Volts

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A: see the attachment please.Explanation:

Q: Problem 1 Determine the capacitance of a parallel-plate capacitor having plates 4 x 12 inches,…

A: The problem is from capacitance. The detailed solution is given in the next step

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.