, If , then the electric field is zero everywhere outside B .

, If , then the electric potential just outside B is .

and If , then the total charge of the configuration is .

. ONE OR MORE THAN ONE of these four option(s) is (are) correct answer(s). • For each question, choose the option(s) corresponding to (all) the correct answer(s). • Answer to each question will be evaluated according to the following marking scheme: Full Mark +4 ONLY If (all) the correct option(s) is(are) chosen; Partial Marks +3 If all the four options are correct but ONLY three options are chosen; Partial Marks +2 If three or more options are correct but ONLY two options are chosen, both of which are correct; Partial Marks +1 If two or more options are correct but ONLY one option is chosen and it is a correct option; Zero Marks 0 If unanswered; Negative Marks: -2 In all other cases. In the figure, the inner (shaded) region A represents a sphere of radius r A =l, within which the electrostatic charge density varies with the radial distance r from the center as , where k is positive. In the spherical shell B of outer radius r B , the electrostatic charge density varies as . Assume that dimensions are taken care of. All physical quantities are in their SI units. Which of the following statement(s) is(are) correct? If r B = , then the magnitude of the electric field just outside B is .