College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 23

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm 2 and separated by a distance of 1.80 mm. If a 20.0-V potential difference is applied to these plates, calculate (a) the electric field between the plates, (b) the capacitance, and (c) the charge on each plate.