An AC adapter for a telephone-answering unit uses a transformer toreduce the line voltage of 120 V (rms) to a voltage of 8.5 V. The rms current delivered to the answeringsystem is 430 mA.
a) If the primary (input) coil in thetransformer in the adapter has 240 turns, how many turns are thereon the secondary (output) coil?
b) What is the rms power delivered to the transformer? Assume anideal transformer.