Electrostatics

Related Questions

• The number of electrons to be put on a spherical conductor of radius$0.1\,m$to produce an electric field of $0.036N/C$ just above its surface is

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• Two charges $ + 3.2 \times {10^{ - 19}}C$ and $ - 3.2 \times {10^{ - 9}}C$ kept $2.4 \AA$ apart forms a dipole. If it is kept in uniform electric field of intensity $4 \times {10^5}volt/m$ then what will be its electrical energy in equilibrium

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• An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The coulomb force \[\overrightarrow F \] between the two is (Where \[K = \frac{1}{{4\pi {\varepsilon _0}}}\])

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• Two point charges of $20\,\mu \,C$ and $80\,\mu \,C$ are $10\,cm$ apart. Where will the electric field strength be zero on the line joining the charges from $20\,\mu \,C$ charge

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• Two spheres A and B of radius ‘a’ and ‘b’ respectively are at same electric potential. The ratio of the surface charge densities of A and B is

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