Considering a group of positive charges, which of the following statements is correct?
Net potential of the system cannot be zero at a point but net electric field can be zero at that point.
Net potential of the system at a point can be zero but net electric field can't be zero at that point.
Both the net potential and the net field can be zero at a point.
Both the net potential and the net electric field cannot be zero at a point.
In the following figure two parallel metallic plates are maintained at different potential. If an electron is released midway between the plates, it will move
Two point charges $-Q$ and $+Q / \sqrt{3}$ are placed in the xy-plane at the origin $(0,0)$ and a point $(2,0)$, respectively, as shown in the figure. This results in an equipotential circle of radius $R$ and potential $V =0$ in the $xy$-plane with its center at $(b, 0)$. All lengths are measured in meters.
($1$) The value of $R$ is. . . . meter.
($2$) The value of $b$ is. . . . . .meter.
$64$ drops of mercury each charged to a potential of $10\,V$. They are combined to form one bigger drop. The potential of this drop will be.......$V$ (Assume all the drops to be spherical)
Two insulated charged spheres of radii $20\,cm$ and $25\,cm$ respectively and having an equal charge $Q$ are connected by a copper wire, then they are separated
The electric potential at the centre of two concentric half rings of radii $R_1$ and $R_2$, having same linear charge density $\lambda$ is