1. a) A waxed paper capacitor has two parallel plates, each 50 mm by 30 mm. If the capacitance of the capacitor is 4500 pF, determine the effective thickness of the paper if its relative permittivity is 2.5. [E. =8.85% 10-12 F/m] (2 Marks) b) For the arrangement shown in Fig. I find (a) the equivalent circuit capacitance and (b) the voltage across a 4.5 uiF capacitor (3 Marks) 4.5F 4.5F 4.5 uF HAHH 3uF HH 1uF 1uF HHHH 500 Vo Figure 1