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Faraday Cage A Faraday cage or Faraday shield is an enclosure made of a conducting material. The fields within a conductor cancel out with any external fields, so the electric field within the enclosure is zero.These Faraday cages act as big hollow conductors. You can put things to shield them from electrical fields. Any electrical shocks the cage receives, pass harmlessly around the outside of the cage. A point charge of 2C is placed at centre of Faraday cage in the shape of cube with surface of 9 cm edge. The number of electric field lines passing through the cube

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Unit of electrical potential

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A charge `Q` is placed at the origin. The electric potential due to this charge at a given point in space is `V`. The work done by an external force in bringing another charge `q` from infinity upto the point

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If `100 J` of work has to be done in moving an electric charge of `4C` from a place, where potential is `- 10V` to another place where potential is `V` volt, find the value of

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The electric potential due to point charge `3nC` at distance of 9 cm

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A metallic hollow spherical surface of radius 5 cm is charged such that the potential on its surface is `10 V`. The potential at the centre

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The potential of a large liquid drop when eight liquid drops are combined is `20V` , then the potential of each single drop

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The potential of an electric dipole varies with distance `r`

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The potential in the equatorial plane of a dipole having dipole moment `p`

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Two equal and opposite charges `[+q and —q)` are situated at a distance `x` from each other. The value of potential at very far point will depend

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A ,B and C are three points in a uniform electric field, the electric potential

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The electrostatic potential energy between proton and electron separated by a distance of `1 A^o`

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The electric potential of earth is taken to be zero, because earth is a

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Suppose a system of two charges as shown below placed in an external electric field`E =A(1/r^2)`, where `A=9 xx 10^5 C'/'m^2`What would be the electrostatic energy of the

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An electric field of 1000 V/m is applied to an electric dipole at angle of 45°. The value of electric dipole moment is `10^(-29) C-m`. What is the potential energy of the electric

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If a conductor has a potential `V!=0` and there are no charges anywhere else outside,

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The graph shows the variation of voltage `V` across the plates of two capacitors `A and B` versus increase of charge `Q` stored in them. Which of the capacitors has higher capacitance

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Two plates of capacitors are at potentials `-10 V and +30 V`. If the separation between the plates be 2m, the electric field between them

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The electric potential difference between two parallel plates is `2000 V`. If the plates are separated by `2 mm`, then what is the magnitude of electrostatic force on a charge of `4 xx 10^(-6)C` located mid-way between the

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A parallel plate capacitor has circular plates of radius 8 cm and plate separation 1 mm. The charge on the plates, if potential difference of `100 V` applied

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