3 (a) i. If you are selling an electrical product in the European Union, what type of conformity marking is required on the product? ii. As the manufacturer of a product; how do you obtain a Declaration of Conformity under the European Union EMC Directive 2014/30/EU? iii. If a product is battery powered with no cable interfaces, what type of interference coupling mechanisms should be considered in the design? [5 Marks) (b) You are measuring the electric field strength E V/m of the emissions from your product at a distance in the "far field" where the wave impedance is constant. What would be the corresponding magnetic field strength in A/m if the electric field strength is 0.01 V/m? [3 Marks] (C) Your product requires a cooling fan aperture to be cut in the shielded enclosure with maximum dimension of 120 mm. What is the approximate maximum shielding effectiveness (SE) that can be achieved from the shielded enclosure including the aperture at a frequency of 600 MHz? [5 Marks]