Electrostatic P...

A capacitor stores $$40$$ $$\mu$$C charge when connected across a battery. When the gap between the plates is filled with a dielectric a charge of $$80$$ $$\mu$$C flows through the battery. The dielectric constant of dielectric inserted is?

The equivalent capacitance between points $$A$$ and $$B$$ will be

Charges $$1\mu C$$ are placed at each of the four corners of a square of side $$2\sqrt {2}m$$. The potential at the point of intersection of the diagonals is _____ $$(K = 9\times 10^{9} SI\ unit)$$.

A hollow metal sphere of radius $$10$$cm is charged such that the potential on its surface becomes $$80$$V. The potential at the centre of the sphere is?

For the given circuit the resultant capacitance between X and Y is 

Find out the equivalent capacitance between $$X$$ and $$Y$$.

Four metallic plates each with a surface area of one side $$A$$ are placed at a distance $$d$$ from each other as shown in figure. Then the capacitance of the system between $$X$$ and $$Y$$ is

Four conducting plates named P, Q, R and S have an area A each and are placed at the same distance d apart. The plates P and S are connected by a conducting wire and Q and R are connected to the terminals of a battery. The equivalent capacitance of the arrangement is?

The following arrangement consists of five identical metal plates. Area of each plate is A and separation between the successive plates is d. The capacitance between P and  

The equivalent capacitance between points a and b in given arrangement of plates will be:(each plate has the area 'A' & separation between two adjacent plates is 'd').