Three point charges are placed at the corners of an equilateral triangle. Assuming only electrostatic forces are acting
The system can never be in equilibrium
The system will be in equilibrium if the charges rotate about the centre of the triangle
The system will be in equilibrium if the charges have different magnitudes and different signs
The system will be in equilibrium if the charges have the same magnitudes but different signs
What is the net force on a $Cl^{-}$ placed at the centre of the bcc structure of $CsCl$
Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that
Two identical non-conducting thin hemispherical shells each of radius $R$ are brought in contact to make a complete sphere . If a total charge $Q$ is uniformly distributed on them, how much minimum force $F$ will be required to hold them together
Figure represents a crystal unit of cesium chloride, $\mathrm{CsCl}$. The cesium atoms, represented by open circles are situated at the corners of a cube of side $0.40\,\mathrm{nm}$, whereas a $\mathrm{Cl}$ atom is situated at the centre of the cube. The $\mathrm{Cs}$ atoms are deficient in one electron while the $\mathrm{Cl}$ atom carries an excess electron.
$(i)$ What is the net electric field on the $\mathrm{Cl}$ atom due to eight $\mathrm{Cs}$ atoms ?
$(ii)$ Suppose that the $\mathrm{Cs}$ atom at the corner $A$ is missing. What is the net force now on the $\mathrm{Cl}$ atom due to seven remaining $\mathrm{Cs}$ atoms ?
A charge $q$ is placed in the middle of a line joining the two equal and like point charge $Q$. This charge $q$ will remain in equilibrium for which value of $q$ is