The primary coil of a certain transformer has an inductance of 3.75 H and a resistance of 36.2 olms. If the primary coil is connected to an ac source with a frquency of 38.6 Hz and a voltage of 71.2 V rms,
1) What is the rms current through the primary? Answer in units of A.
2) If the primary is connected to 64.7 V dc, what is the current through the primary? Disregard initial effects. Answer in units of A
3) In case 1, find the power dissipated in the resistance. Answer in units of W
4) In case 2, find the power dissipated in the resistance. Answer in units of W