Решение задачи по физике раздел 69 пункт 95 электро

95. The area of each plate of a flat mica capacitor is 300 cm2, the thickness of the mica plate is 1 mm. The dielectric constant is 7. What potential difference was applied to the plates, if it is known that 0.21 J of energy was released during the discharge of the capacitor?

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)