Electrostatics

Related Questions

• Two insulated charged conducting spheres of radii $20\,cm$ and $15\,cm$ respectively and having an equal charge of $10\,C$ are connected by a copper wire and then they are separated. Then

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• Consider two point charges of equal magnitude and opposite sign separated by a certain distance. The neutral point due to them

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• An oil drop having charge $2e$ is kept stationary between two parallel horizontal plates 2.0 cm apart when a potential difference of 12000 volts is applied between them. If the density of oil is $900 kg/m^3$, the radius of the drop will be

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• Four identical charges $+ \,50\,\mu C$ each are placed, one at each corner of a square of side $2\,m$. How much external energy is required to bring another charge of $+ \,50\,\mu C$ from infinity to the centre of the square$\left( {{\rm{Given}}\frac{{\rm{1}}}{{{\rm{4}}\pi {\varepsilon _{\rm{0}}}}} = 9 \times {{10}^9}\frac{{N{m^2}}}{{{C^2}}}} \right)$

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• Two metal pieces having a potential difference of $800\,V$ are $0.02\,m$ apart horizontally. A particle of mass $1.96 \times {10^{ - 15}}kg$ is suspended in equilibrium between the plates. If $e$ is the elementary charge, then charge on the particle is

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