Which is the best dielectric material?

Question

a) Mica; Thickness = 0.10mm K=5.4

b) Glass; Thickness = 2.0mm K=7.0

c) Paraffin; Thickness = 1.0 cm K= 2.0

I think I know the answer but I can't show a valid solution. Can you help?

Answer 1

For each part, plug in the values into the formula C = KƐ₀A / d. Just use random values such A = 4.00 m² and d = 0.100 m. Whatever gives you the highest capacitance value is the best dielectric material.