Electrostatic P...

The radius of a nucleus of an atom $$(Z=50)$$ is $$9\times 10^{-10}m$$ then potential on its surface, will be:

The distance between at the plates of a charged plate capacitor disconnected from the battery is 5 cm and the intensity of the field in it is E = 300 V/cm. An uncharged metal bar 1 cm thick is introduced into the capacitor parallel between its plates. If the battery provided 6 uC charge, find final capacitance.

A circuit
has a section AB as shown in figure with E=$${\text{10}}\;\;{\text{V,}}\;{{\text{C}}_{{\text{1}}\;}}{\text{ = }}$$ 1.0 $$\mu F$$$${{\text{C}}_{\text{2}}}\;{\text{ = }}\;{\text{2}}{\text{.0}}$$ $$\mu F$$and the potential difference $${{\text{V}}_{\text{A}}}\;{\text{ - }}{{\text{V}}_{\text{B}}}{\text{ = 5}}\;{\text{V}}$$ The
voltage across $${{\text{C}}_{\text{1}}}$$ is :

During charging and discharging of a capacitor:-

In the given circuit the effective capacity between A and B is

Two identical capacitors are connected in series with a source of potential V. If Q is the charge on one of the capacitors, the capacitance of each capacitor is: 

Choose the incorrect relation among the following:

Three identical capacitors are connected in series. The capacitance of combination is $$C$$ and break-down voltage is $$V$$. The net capacitance and break down voltage when these are connected in parallel combination will be:

You are given 32 capacitors of $$4\mu F$$ capacitance each. How do you connect all of them so that the effective capacitance becomes $$8 \mu F$$?

What is the electric potential at a distance $$'x'$$ from the centre, inside a conducting sphere having a charge $$Q$$ and radius $$R$$?