- #1
JH2o
- 1
- 0
hiya guys,
I'm having a large amount of trouble with a problem that I've been working through (currently revising for an uncoming exam in electromagnetism, along with a lot of other things). the problem is stated as follows (condensed):
coaxial cable - inner cylinder radius a, out cylinder radius 4a
region of radius 2a < r < 3a filled with relative permeable material mu(r) > 1
find the inducance L per unit length when cable is in a circuit with current in axial symmetry out along one cylinder and returning along the other.
suppose there is only enough magnetic material availble to this inductor, explain why L can be increased by distribution and find the largest inductance acheivable by doing so.
any light towards where to even start on this would be great!
thanks
I'm having a large amount of trouble with a problem that I've been working through (currently revising for an uncoming exam in electromagnetism, along with a lot of other things). the problem is stated as follows (condensed):
coaxial cable - inner cylinder radius a, out cylinder radius 4a
region of radius 2a < r < 3a filled with relative permeable material mu(r) > 1
find the inducance L per unit length when cable is in a circuit with current in axial symmetry out along one cylinder and returning along the other.
suppose there is only enough magnetic material availble to this inductor, explain why L can be increased by distribution and find the largest inductance acheivable by doing so.
any light towards where to even start on this would be great!
thanks