EASY
12th CBSE
IMPORTANT
Earn 100

Just outside a conductor electric field is perpendicular to the surface. Give reason.

Important Questions on Electrostatic Potential and Capacitance
MEDIUM
12th CBSE
IMPORTANT
Show that the excess charge on a conductor resides only on its surface.

MEDIUM
12th CBSE
IMPORTANT
Show that the electric field at the surface of a charged conductor is given by , where is the surface charge density and n ̂ is a unit vector normal to the surface in the outward direction?
or
Derive an expression for the electric field at the surface of a charged conductor.

EASY
12th CBSE
IMPORTANT
Show that electric field is zero in the cavity of hollow charged conductor.

EASY
12th CBSE
IMPORTANT
What is electrostatic shielding? Mention its two applications.

EASY
12th CBSE
IMPORTANT
Define electrical capacitance of a conductor, on what factors does it depend?

EASY
12th CBSE
IMPORTANT
Show that the capacitance of a spherical conductor is proportional to its radius. Hence justify that farad is a large unit of capacitance.

EASY
12th CBSE
IMPORTANT
An isolated conductor cannot have a large capacitance. Why?

EASY
12th CBSE
IMPORTANT
Why does the capacitance of a conductor increase, when an earth connected conductor is brought near it? Briefly explain.
