Electrostatics

Related Questions

• Cathode rays travelling from east to west enter into region of electric field directed towards north to south in the plane of paper. The deflection of cathode rays is towards

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• If a charged spherical conductor of radius $10\,cm$ has potential $V$ at a point distant $5\,cm$ from its centre, then the potential at a point distant $15\,cm$ from the centre will be

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• As per this diagram a point charge $+ q$ is placed at the origin $O$. Work done in taking another point charge $- Q$from the point $A$ [co-ordinates $(0,\,a)$] to another point B [co-ordinates (a, 0)] along the straight path $AB$ is

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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 placed at a certain distance r in air exert a force F on each other. Then the distance ‘r' at which these charges will exert the same force in a medium of dielectric constant k is given by

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