Question

A charged conductor produces an electric field of intensity 10³ V/m just outside its surface in vacuum. Then, it produces the electric field of intensity E just outside its surface, when it is placed in a medium of dielectric constant 4. The value of E will be ______.

Options

• 400 V/m

• 450 V/m

• 250 V/m

• 150 V/m

Answer 1

A charged conductor produces an electric field of intensity 10³ V/m just outside its surface in vacuum. Then, it produces the electric field of intensity E just outside its surface, when it is placed in a medium of dielectric constant 4. The value of E will be 250 V/m.

Explanation:

Given, electric field produced by charged conductor in vacuum,

E₀ = 10³ V/m

Electric field produced by charged conductor, when it is placed in medium of dielectrics (K = 4) is E = `"E"_0/"K" = 10^3/4` = 250 V/m