Electrostatics

Related Questions

• In the figure the charge $Q$ is at the centre of the circle. Work done is maximum when another charge is taken from point $P$ to

  ---

• A solid conducting sphere of radius a has a net positive charge 2Q. A conducting spherical shell of inner radius \[b\] and outer radius c is concentric with the solid sphere and has a net charge – Q. The surface charge density on the inner and outer surfaces of the spherical shell will be

  ---

• The torque acting on a dipole of moment $\overrightarrow P $ in an electric field $\overrightarrow E $ is

  ---

• To charges ${q_1}$ and ${q_2}$ are placed $30\,\,cm$ apart, shown in the figure. A third charge ${q_3}$ is moved along the arc of a circle of radius $40\,cm$ from $C$ to D. The change in the potential energy of the system is $\frac{{{q_3}}}{{4\pi {\varepsilon _0}}}k$, where $k$ is

  ---

• When \[{10^{14}}\] electrons are removed from a neutral metal sphere, the charge on the sphere becomes

  ---