Consider two parallel perfectly conducting plates of area A that are separated by a distance W in air forming a capacitor. A dielectric layer with relative permittivity of sr=2 and thickness of Wl2 is inserted midway between plates. The capacitor is connected to a voltage source of V0. Sketch and labels plots showing: a] Electric field, E as a function of the distance between two plates (0 s x s W] b] Charges as a function of the distance between two plates? c) Voltage as a function of the distance between two plates? Explain in detail