An ideal step-down transformer has a primary coil of 380 turns
and a secondary coil of 17 turns. Its primary coil is plugged into
an outlet with 120 V(AC), from which it draws an rms current of
0.19 A.
(a) What is the voltage in the secondary coil?
(b) Calculate the rms current in the secondary coil.
(c) Assuming that the transformer secondary is driving a
resistive load, calculate the average power dissipated in the
resistor.