An AC adapter for the telephone-answering unit employs a transformer to decrease the line voltage of 120 V (rms) to a voltage of 10.5 V. The rms current transported to the answering system is 370 mA.
(i) When the primary (input) coil in the transformer in the adapter consists of 240 turns, determine how many turns are there on the secondary (output) coil?
(ii) Find the rms power delivered to the transformer? Suppose the ideal transformer.