Question

18. An electric dipole is completely inside a closed imaginary surface and there are no other charges. True or false: (a) The electric field is zero everywhere on the surface. (b) The electric field is normal to the surface everywhere on the surface. (c) The electric flux through the surface is zero. (d) The electric flux through the surface could be positive or negative. (e) The electric flux through a portion of the surface might not be zero

Answer 1

Answer:

Explanation:

We shall apply Gauss's theorem to calculate the electric flux through a closed surface due to charge contained in side

Total charge inside surface = zero  

So total electric flux through closed surface will be zero.  

or electric flux going out = electric flux coming in  

(a) The electric field is zero everywhere on the surface.  True  

(b) The electric field is normal to the surface everywhere on the surface. - false

(c) The electric flux through the surface is zero. True  

(d) The electric flux through the surface could be positive or negative - false

(e) The electric flux through a portion of the surface might not be zero - True

Answer 2

The correct options are:

(c) The electric flux through the surface is zero

(e) The electric flux through a portion of the surface might not be zero

Electric dipole:

• The electric field due to an electric dipole does not vary uniformly either in magnitude or direction.
• The direction of the electric field is normal to a portion of the surface, not the whole surface, it actually depends on the type of surface chosen.
• The electric flux through the surface is zero because the net charge or monopole is zero since a dipole is made up of two charges of equal magnitude and opposite sign.
• The electric flux through a portion of the surface might not be zero because the number of outgoing field lines and the number of incoming field lines might be different in a portion of the surface.

Learn more about electric dipole:

https://brainly.com/question/14552607?referrer=searchResults