Question

A Gautuan cube is shown to the left of a positively charged particle. Consider the statements below: Amber: "The electric flux through every side of the cube will be zero because there is no charge inside the cube." Bo: "Since there is no charge inside the cube, the net electric flux through the cube will be zero. However, each side will have non-zero electric flux values which, when added together, cancel out." Caleb: " The net electric flux on the cube will not be zero. The number of electric field lines on the side of the cube closest to the particle will be greater than the lines through the opposite side. It will therefore be impossible for the electric flux through each side to cancel." Which of these students is correct? Amber_Bo_Caleb_None of them_Explain. Two charged particles are inside a Gaussian sphere. Consider the statements below: Andrew: "Since the charges inside the sphere cancel or neutralize each other, the net electric flux through the sphere will be zero, so there will be no electric field." Banji: "Since the net charge inside the sphere is zero, the net electric flux through the sphere will be zero. However, the electric field must have a non-zero value inside and outside of the sphere because charged particles produce electric fields." Chris: "Since there are charges, there must be an electric field present. Since electric flux depends on the electric field and the area of the surface, neither of which is zero, there must be a non-zero net electric flux through ihe sphere." Which of these students is correct? Andrew___Banji_Chris_None of them_Explain.

Answer 1

Banji is correct

Since electric field is the absolute sum of electric field due to two charge

E= k |Q| / r^2