What is a cylindrical capacitor? Derive expression for its capacitance?

What is spherical capacitor? Derive expression for its capacitance.

What is spherical capacitor?Derive expression for its capacitance.

What is a parallel plate capacitor? Derive an expression for the capacitance of a parallel plate capacitor?

What is a capacitor? Derive an expression for capacitance of a parallel plate capacitor.

Define the capacitance of capacitor. Derive an expression for the capacity of parallel plate capacitor with a dielectric slab placed in between the plates of capacitor.

What is a capacitor? Derive an expression for the evergy stored in a charged capacitor.