Electrostatics

Related Questions

• A force \[F\] acts between sodium and chlorine ions of salt (sodium chloride) when put \[1\,cm\] apart in air. The permittivity of air and dielectric constant of water are \[{\varepsilon _0}\] and \[K\] respectively. When a piece of salt is put in water electrical force acting between sodium and chlorine ions \[1\,cm\] apart is

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• A conductor with a positive charge

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• Two parallel plates have equal and opposite charge. When the space between them is evacuated, the electric field between the plates is $2 \times {10^5}V/m$. When the space is filled with dielectric, the electric field becomes $1 \times {10^5}V/m$. The dielectric constant of the dielectric material

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• Two point charges $+ 9e$and $+ e$are at 16 cm away from each other. Where should another charge q be placed between them so that the system remains in equilibrium

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• The electric field due to an electric dipole at a distance r from its centre in axial position is E. If the dipole is rotated through an angle of ${90^o}$ about its perpendicular axis, the electric field at the same point will be

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