Embibe Experts Solutions for Chapter: Electrostatics, Exercise 1: Exercise 1

When a number of charged liquid drops coalesce, which of the following quantity does not change?

The number of electrons in one $\mathrm{coulomb}$ charge is

If two electrons are forced to come closer to each other, the potential energy of the system of $2$ electrons will

Two equally charged metal spheres $A$ and $B$ repel each other with a force of $4\times {10}^{-5} \mathrm{N}$. Another identical uncharged sphere $C$ is touched to $A$ and then placed at the mid point of the line joining the spheres $A$ and $B$. The net electric force on the sphere $C$ is

The magnitude of point charge due to which the electric field $30 \mathrm{cm}$ away has the magnitude $2 {\mathrm{NC}}^{-1}$ will be

A hollow conducting sphere is placed in an electric field produced by a point charge placed at $P$ as shown in figure. Let $V_A, V_B, V_C$ be the potentials at points $A, B$ and $C$, respectively. Then

A spherical conductor $A$ is placed concentrically inside a hollow spherical conductor $B$. The charge $+Q$ is given to $A$ and $B$ is earthed. Then the electric field is not zero

Figure shows three arrangements of electric field lines. In each arrangement, a proton is released from rest at point A and then accelerated through point B by the electric field. Points A and B have equal separations in the three arrangements. If $p_1,p_2$ and $p_3$ are linear momentum of the proton at point B in the three arrangement respectively, then