Solve the all parts of following question given below:
Question: A parallel-plate capacitor is made with two circular metal plates of radius R which are separated by a distance of 2.2 mm.
Part A: If the capacitance of this capacitor is 2.2 µF, what is R? I found that it was 13.2m.
Part B: If the space between the plates of the capacitor is filled with glass instead of air, what will be the new capacitance? µF
I want you to explain the physics in this question.