1921 年 41 巻 400 号 p. 813-815
As the continuation of the author's former paper in the July number of the Journal, it is shown that the electromagnetic induction due to a transmission line with earth return, which is in form any arbitrary combination of straight lines, can be calculated by applying the formula obtained for a simple straight line to each straight portion of the given line and summing up the results. Method of calculating the effective self-inductance is also shown. A few corrections of the former paper suffixed.