Explain the electrostatics of conductors. Exp | vedclass

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

Question

(N/A) In metallic conductors, the charge carriers are electrons. In a metal, the outer (valence) electrons part away from their atoms and are free to

Vedclass · Accepted Answer

Vedclass · Answer

(N/A) In metallic conductors, the charge carriers are electrons. In a metal, the outer (valence) electrons part away from their atoms and are free to move.
These electrons are free from their parent atoms but are not free to leave the metal. Hence, these free electrons form a kind of 'gas'.
Free electrons collide with each other and with the ions, moving randomly in different directions.
When placed in an external electric field $\vec{E}$, they drift against the direction of the field and get deposited on one surface, while an equal amount of positive charge is left on the opposite surface. This is shown in the figure.
The induced charges produce an internal electric field $\vec{E}_{in}$ inside the conductor in the direction opposite to the external electric field.
When the external electric field and the internal electric field become equal in magnitude, the net electric field inside the conductor becomes zero, and the charges stop depositing on the surface.

Explain the electrostatics of conductors. Explain the effects produced inside a metallic conductor placed in an external electric field.

Similar Questions

$A$ solid spherical conducting shell has an inner radius $a$ and an outer radius $2a$. At the center of the shell is located a point charge $+Q$. What must the excess charge of the shell be in order for the charge density on the inner and outer surfaces of the shell to be exactly equal?

Two conducting spheres of radii $20\, cm$ and $15\, cm$ are placed on insulating stands. Both are given an equal charge of $10\ \mu C$. When they are connected by a copper wire and then disconnected,which of the following is true?

$A$ hollow conducting sphere is placed in an electric field produced by a point charge placed at $P$ as shown in the figure. Let $V_A, V_B$,and $V_C$ be the potentials at points $A, B$,and $C$ respectively,where $A$ and $B$ are on the surface of the sphere and $C$ is inside the sphere. Then:

Two metal spheres $A$ and $B$ of radii $a$ and $b$ $(a < b)$ respectively are at a large distance apart. Each sphere carries a charge of $100 \mu C$. The spheres are connected by a conducting wire,then

$A$ solid conducting sphere of radius $a$ has a net positive charge $2Q$. $A$ conducting spherical shell of inner radius $b$ and outer radius $c$ is concentric with the solid sphere and has a net charge $-Q$. The surface charge density on the inner and outer surfaces of the spherical shell will be

Vedclass Test Series

Exam Paper Generator

Online Exam Module