What is electrostatic shielding? Mention one application of it.
Consider a conductor with the
cavity with no charges places in side the cavity .
Whatever the size and shape of the cavity and what ever be
the charge on the conduction and the external fields in which it might be
placed .
The electric field inside the cavity is zero.
(ie) the cavity inside inside the conductor remains shielded
from outside electric influence.
This is known as electric shielding .
Applications :
(i)In thunder strong accompany by lightening it is safest to
sit inside a car , rather than near a tree or open ground.
The metallic body of the car becomes an electrostatic shielding from lightening .
(ii)Sensitive components of electronic devices protected or
shielded from external electric disturbances by placing metal sheets around
them .
(iii) In a coaxial cable the outer conductor connected to
ground provides an electrical shield to the signals carried by the central conductor
.
Consider a conductor with the
cavity with no charges places in side the cavity .
Whatever the size and shape of the cavity and what ever be
the charge on the conduction and the external fields in which it might be
placed .
The electric field inside the cavity is zero.
(ie) the cavity inside inside the conductor remains shielded
from outside electric influence.
This is known as electric shielding .
Applications :
(i)In thunder strong accompany by lightening it is safest to
sit inside a car , rather than near a tree or open ground.
The metallic body of the car becomes an electrostatic shielding from lightening .
(ii)Sensitive components of electronic devices protected or
shielded from external electric disturbances by placing metal sheets around
them .
(iii) In a coaxial cable the outer conductor connected to
ground provides an electrical shield to the signals carried by the central conductor
.
