Electrostatics

Related Questions

• 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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• In general, metallic ropes are suspended on the carriers which take inflammable material. The reason is

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• A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as

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• Two charges of $4\mu C$ each are placed at the corners A and B of an equilateral triangle of side length 0.2 m in air. The electric potential at C is $\left[ {\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {{10}^9}\frac{{N{\rm{ - }}{m^2}}}{{{C^2}}}} \right]$

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• A conducting sphere of radius $R = 20$ cm is given a charge $Q = 16\mu C$. What is $\overrightarrow E $ at centre

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