Three concentric conducting shells A, B, and C of radii a, b and c are as shown in figure. A dielectric of dielectric constant K is filled between A and B. Find the capacitance between A and C.

Find the equivalent capacitance between A and C.

Find the equivalent capacitance between A and B.

Find the equivalent capacitance between A and B.

Equivalent capacitance between A & B in the figure is

The effective capacitance between A and B in the figure shown is (all capacitances are in muF )

A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant k, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?

A parallel plate capacitor has plates A and B each of area 0.5m^2 and a plate separation of 0.2 m. A dielectric slab of thickness 0.1m and dielectric constant 2.5 is placed between the two plates as shown - (a) FInd the capacitance of the capacitor, if the surface charge densities of the two plates are 8.854xx10^(-10)Cm^(-2) . (b) Graphically represent the variation of electric field between the two plates from A to B.

If veca+vecb=vecc and a+b=c , find the angle between veca and vecb .

The parallel plate capacitors of capacitances C and 2C are connected in parallel and charged to a potential difference V by a battery. The battery is the disconnected and the space between the plates of capacitance C is filled with a dielectric of dielectric constant K. Find the potential difference across the combination now.

Three concentric metal shells A, B, and C of respective radii a,b and c (a lt b lt c) have surface charge densities +sigma, -sigma and +sigma respectively. The potential of shell B is