An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by

Question:

An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.80 mm. A 20.0-V potential difference is applied to these plates. Calculate
(a) The electric field between the plates,
(b) The surface charge density,
(c) The capacitance, and
(d) The charge on each plate.