Electric Charge...

The electric field in a region is given by $$\vec{E}=a\hat{i}+b\hat{j}$$. Here a and b are constants. Find the net flux passing through a square area of side $$l$$ parallel to y-z plane:

A charge Q is placed at the  centre of cube. The electric flux emerging from any one surface of the cube is .

Identify the wrong statement in the following. Coulomb's law correctly describes the electric force that 

Two identical poles each of strength m are placed at two corners of an equilateral  triangle of side 1 m. Then the force on another like pole of same strength at the the other corner is

Given a uniform electric field $$E=5\times 10^3\hat{i} \ N/C$$, find the flux of this field through a square of $$10\ cm$$ on a side whose plane is parallel to the $$y-z$$ plane. What would be the flux through the square if the plane makes $$30^\circ$$ angle with the x-axis.

A hemispherical surface (half of a spherical surface) of radius  $$R$$  is located in a uniform electric field  $$E$$  that is parallel to the hemisphere. What is the magnitude of the electric flux through the hemisphere surface ?

When a $$10\mu C$$ charge is enclosed by a closed surface, the flux passing through the surface is $$\phi .$$ Now another $$ - 5\mu C$$ charge is placed inside the same closed surface, then the flux passing through the surface is__________

The electric flux $$ \phi  $$ through a hemisphere surface of radius R, placed in a uniform electric field of intensity E parallel to the axis of its circular plane is:

 A positive charge $$q$$ is enclosed by a Gaussian spherical surface of radius '$$a$$' . If its radius is increased to $$4a$$ then the net outwards flux will

In the given figure flux through surface  $$S _ { 1 }$$  is  $$\phi _ { 1 }$$   $$\&$$  through  $$S  _ { 2 }$$  is  $$\phi _ { 2 }.$$  Which is correct ?