Electric field intensity due to an infinitely long straight uniformly charged wire is proportional to

a. r

b. 1/r

c, 2r

Total flux across a closed surface enclosing charge is independent of

a. shape of the closed surface

b. volume of the enclosure

c. actual spatial argument of charges within the surface

d. all the above

A Gaussian sphere closes an electric dipole within it. Then the total flux through the sphere is(1 Point)

a. half that due to a single charge

b. double due to a single charge

c. zero

d. dependent of the position of the dipole