When field lines are leaving a surface the flux will be taken as

If net flux through a Caussian surface is zero, then find whether the following statements are correct or not. The number of field lines entering the surface equals to the number of field lines leaving the surface.

If net flux through a Caussian surface is zero, then find whether the following statements are correct or not. The number of field lines entering the surface equals to the number of field lines leaving the surface.

If the magnetic field is parallel to a surface, then the magnetic flux through the surface is :

If the magnetic field is parallel to a surface then, the magnetic flux through the surface is

If the magnetic field is parallel to a surface then, the magnetic flux through the surface is

The black shapes in the figure below are closed surfaces. The electric field lines are in red. For which case the net flux through the surfaces is non-zero ?

An electron enters into the space of uniform field of finite width making an angle 60^(@) to the field lines and leaves at angle 30^(@) to the field lines. The ratio of its kinetic energy while entering the electric field to the while leave will be :

An electron enters into the space of uniform field of finite width making an angle 60^(@) to the field lines and leaves at angle 30^(@) to the field lines. The ratio of its kinetic energy while entering the electric field to the while leave will be :

If electric flux linked with a surface is maximum , what will be the angle of the field lines with the normal to the surface ?