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Why we do not...

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Why we do not use capacitor made up of metal and capacitance of spherical shell is direct proportion to dielectric constant

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Q. A sphercial capacitor is made of two conducting spherical shells of radii a and b. The space between the shells is filled with a dielectric of dielectric constant K up to a radius c as shown in figure (31-E27). Calculate the capacitance.

Q. A spherical capacitor is made of two conducting spherical shells of radii

p = 5 cm

q = 15 cm

. The space between the shells is filled with a dielectric of dielectric constant

K = 10

r = 9 cm

as shown in the figure. Calculate the capacitance (in

pF

). [Nearest integer value]

Q. Derive an expression for the capacitance of a parallel plate capacitor. Why does the capacitance increase by using dielectric in capacitor?

Q. A parallel Plate capacitor of area A, plate separation d and capacitance C is filled with three dielectric materials having dielectric constants

k_{1}, k_{2}

k_{3}

as shown if a single dielectric material is to be used to have the same capacitance in the capacitor, then its dielectric constant k is given by

Q. A parallel plate capacitor of plate area

A

, plate separation

d

and capacitance

C

is filled with three different dielectric materials having dielectric constants

K_{1}, K_{2}

K_{3}

. If a single dielectric material is to be used to having the same capacitance C in this capacitor then its dielectric constant

K

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