An electromagnet is modeled as a 200-mH inductance in series with a 4- resistance. The average current in the inductance must be 10 A to establish the required magnetic field. Determine the amount of...

An electromagnet is modeled as a 200-mH inductance in series with a 4-
resistance. The average current in the inductance must be 10 A to establish the required magnetic field. Determine the amount of additional series resistance required to produce the required average current from a bridge rectifier supplied from a single-phase 120-V, 60-Hz source.