posted by bad at physics .
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm.
(a) If a 16.0 V potential difference is applied to these plates, calculate the electric field between the plates.
(b) What is the surface charge density?
(c) What is the capacitance?
(d) Find the charge on each plate.