Electrostatics

Related Questions

• Four point +ve charges of same magnitude (Q) are placed at four corners of a rigid square frame as shown in figure. The plane of the frame is perpendicular to $\rlap{--} Z$ axis. If a –ve point charge is placed at a distance z away from the above frame (z<<L) then

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• A hollow conducting sphere is placed in an electric field produced by a point charge placed at P as shown in figure. Let ${V_A},{V_B},{V_C}$ be the potentials at points $A,B$ and C respectively. Then

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• 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 small spherical balls each carrying a charge $Q = 10\mu C$ (10 micro-coulomb) are suspended by two insulating threads of equal lengths 1m each, from a point fixed in the ceiling. It is found that in equilibrium threads are separated by an angle ${60^o}$ between them, as shown in the figure. What is the tension in the threads (Given: $\frac{1}{{(4\pi {\varepsilon _0})}} = 9 \times {10^9}Nm/{C^2}$)

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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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