(a)[4]
(i) Suggest the material used for the two coils. State why this material is chosen. (ii) Suggest the material used for the core. State why this material is chosen.
(b)[5]
(i) State the distinction between transformer X and transformer Y. (ii) Explain why a very high voltage is used for transmission across large distances. (iii) Suggest why the voltage used by a home consumer is 240 V, rather than a much higher value.