Home › Karnataka PUC II › physics › electrostatic_potential_capacitance › A hollow charged conductor encloses an empty cav…
A hollow charged conductor encloses an empty cavity. The electric field inside the cavity is
AReversed in direction relative to the outer field
BEqual to the field outside the conductor
CTwice the field on the outer surface
DZero — this is the basis of electrostatic shielding
Answer & Solution
Correct answer: D. Zero — this is the basis of electrostatic shielding
Electrostatic shielding: the field inside a cavity within a conductor is zero regardless of the external charge distribution, provided no charges are inside the cavity. This is why Faraday cages work.
Related questions
Choose the INCORRECT statement about electric potential.A charge Q = 4 × 10⁻⁷ C is at the origin. The work done in bringing a small test charge q The work required to assemble a system of two point charges q₁ and q₂ separated by distancTwo charges +q and −q are placed at distance 2a. The electric potential V at a point on thWhich property does NOT necessarily hold for a charged conductor in electrostatic equilibrThe relation between electric field E and potential V along a direction r isIf a charge q is moved through a potential difference V, the work done by the external forThe electric potential due to a short dipole at large distances falls off with distance r