An air-filled parallel-plate capacitor has plates of area 5.00 cm2 separated by 1.20 mm.
(a) Find the value of its capacitance.
(b) Calculate the charge if it is connected to a 3.0 V battery.
(c) What is the magnitude of the uniform electric field between the plates?
(d) If a dielectric of constant 3.4 is placed between the plates, what will be the new value of capacitance and charge