Question

What is the capacitance of two square parallel plates 6.7 cm on a side that are separated by 1.8 mm of paraffin? The dielectric constant of paraffin is 2.2.

Answer 1

Here ,

radius of plates, r = 6.7 cm

d = 1.8 mm

dielectric , k = 2.2

as the capacitance is given as

capacitance = k * epsilon0 * Area/d

capacitance = 2.2 * 8.854 *10^-12 * pi * 0.067^2/(1.8 *10^-3)

capacitance = 1.526 *10^-10 F

the capacitance of the capacitor is 1.526 *10^-10 F