Assertion : In a cavity within a conductor,th | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In a conductor,the net electric field inside the material is zero because the free electrons redistribute themselves to cancel any external electr

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) In a conductor,the net electric field inside the material is zero because the free electrons redistribute themselves to cancel any external electric field. Due to this redistribution,the net charge inside the volume of the conductor is zero,and all excess charges reside on the outer surface of the conductor. According to Gauss's Law,if there is no charge enclosed within a cavity inside a conductor,the electric field inside that cavity must also be zero. Thus,the reason correctly explains why the electric field is zero in the cavity,as the charges reside only on the surface,leaving the interior (including the cavity) field-free.

Assertion : In a cavity within a conductor,the electric field is zero.
Reason : Charges in a conductor reside only at its surface.

Similar Questions

$A$ charge of $Q$ coulomb is placed on a solid piece of metal of irregular shape. The charge will distribute itself:

Two insulated charged spheres of radii $20\,cm$ and $25\,cm$ respectively and having an equal charge $Q$ are connected by a copper wire,then they are separated.

$A$ metal cube is given a positive charge $(+Q)$. Which of the following statements is true?

The metal plate on the left in the figure carries a charge of $+q$. The metal plate on the right has a charge of $-2q$. What charge will flow through the switch $S$ when it is closed,if the central plate is initially neutral?

The metal plate on the left in the figure has a charge of $+q$. The metal plate on the right has a charge of $-2q$. What charge will flow to the earth when switch $S$ is closed, given that the middle plate is initially neutral?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Assertion : In a cavity within a conductor,the electric field is zero.Reason : Charges in a conductor reside only at its surface.