FIITJEE|Exercise (NUMERICAL BASED QUESTIONS)|4 Videos
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The nuclear charge ( Ze ) is non uniformlly distribute with in a nucleus of radius r. The charge densilty rho(r) (charge per unit volume) is dependent only on the radial distance r form the centre of the nucleus s shown in figure. The electric field is only along the radial direction. The electric field within the nucleus is generaly observed to be linearly dependent on r. This implies
The electric field at r= R is
Assertion: A current flows in a conductor only when there is an electric field within the conductor: Reason: The drift velocity of electron in presence of electric field decreases.
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 in to shield them from electrical fields. Any electrical shocks the cage receives, pass harmlessly around the outside of the cage. What is the electrical force inside a Faraday cage when it is struck by lightning?
Electric field at a point varies as r^(0) for
The electric field and the potential of an electric dipole vary with distance r as
If the total charge enclosed by a surface is zero, does it imply that the electric field everywhere on the surface is zero ? Conversely, if the electric field everywhere on a surface is zero, does it imply that net charge inside is zero.
Electric field of a system of charges does not depend on
Electric field of a system of charges does not depend on
