The figure below shows a step-down transformer used in a laptop power supply. core primary secondary call ") Explain why transformers only work continuously when supplied with an alternating current. (1 mark) b) The primary coil of the transformer is connected to a 230 Vm, ac supply. The current in the primary coll is 0.30 Arms. The secondary coil has 300 turns and provides an output of 20 Vm and a power of 65 W. I) Calculate the peak current in the primary coil. (1 mark] lij Calculate the number of turns on the primary coil. (1 mark) Hij Calculate the current Im In the secondary circuit of this transformer. (2 marks) cl State why the power calculated from this current is more than the actual power in the Second might Il markl