The expected answers were:
(a)(i)    Magnetic flux density

Magnetic lines of force per unit area within a substance through a plane at right angle to the flux

                             (ii)   Electric flux density

The number of electric lines of force passing through a given area.                                                                                                              
 
                        (b)(i)    Units   -  Weber/m2 or Tesla                                                   

                            (ii)    Units   -  Coulomb/square meter                                            

                        (c)       
                                       = 0.2 x 4 x 10-4 = 80 x 10-6 Wb
                                                           

            The question was on Electric and Magnetic Fields. It was popular with the candidates, however, their performance was reported average