I have an ideal, air-filed, parallel plate capacitor that has a charge of magnitude 25 muC when the voltage across et is 4.0 V.
(a) What is the value of the capacitance?
(b) Suppose that I double the voltage. What is the capacitance now?
(C) Starting with the original voltage, I now insert a dielectric that completely fills the space between the parallel plate. The dielectric constant is 3.0. What is the capacitance now?