Saved Bookmarks
| 1. |
For several practical applications the so-called "differential" magnetic permeability mu'=1/mu_(0) (d B)/(d H) the usual magnetic permeability mu-B//mu_(0)H is the parameter of interest. Here (d B)/(d H) is the derivative of the field induction with respect to the field intensity, i.e. the slope of the graph in Fig. 29.9a. For the purpose of practical calcula- tions one can assume mu'=(1)/mu_(0) (triangle B)/(triangle H)" where "triangleB and triangleH are chosen so small that the respective segment of the graph may be regarded as a straight line. Find the approximate values of the differential magnetic permeability for the same values of the magnetic field strength as in Problem 29.9. |
|
Answer» |
|