The thickness of air layer between two coating of a spherical capacitor is 2cm. The capacitor has same capacitance as the sphere of 1.2m diameter. Find the radii of its surfaces.

Find the capacitance between P and O. Each capacitor has capacitance C. .

Each capacitor has cpacitance C. . The capacitance between 1 and 3 is.

If a thin metal foil of same area is placed between the two plates of a parallel plate capacitor of capacitance C, then new capacitance will be

Two capacitors with capacitances C_(1) and C_(2) are connected in series. Find the resultant capacitance.

Two capacitors with capacitances C_(1) and C_(2) are connected in parallel. Find the resultant capacitance.

The diameter of a sphere is 10 cm. Find its surface area.

The separation between the plates of a parallel-plate capacitor of capacitance 20muF is 2mm. The capacitor is initially uncharged. If a dielectric slab of surface area same as the capacitor, thickness 1mm , and dielectric constant 2 is introduced, and then the new capacitance is?

(i) Find equivalent capacitance between A and B in the combination give below . Each capacitor is a of 2 muF capacitance .

The diameter of a sphere is 2 sqrt(3) cm . Find its curved surface area.

Find the equivalent capacitance between points A and B. Capacitance of each capacitor is 2muF .