일반물리학 2 — Capacitance: Problem 27

27 A parallel-plate capacitor has a capacitance of 100 pF, a plate area of 80 cm2, and a mica dielectric (\(\kappa = 5.4\)) completely filling the space between the plates. At 85 V potential difference, calculate (a) the electric field magnitude E in the mica, (b) the magnitude of the free charge on the plates, and (c) the magnitude of the induced surface charge on the mica.