Consider a stepper motor that has two poles per phase. The pole windings in each phase may be connected either in parallel or in series, as shown in Figure P7.6. In each case, determine the required ratings for phase power supply (rated current, rated
voltage, rated power) in terms of current i and resistance R, as indicated in Figure P7.6a. Note that the power rating should be the same for both cases, as is intuitively clear.