- #1
yungman
- 5,726
- 278
I am trying to figure out how the TEM wave looks like and how it propagate outward. Attached is a pdf of a drawing with only the solenoid and show the winding that the current is flowing in CCW and a reference. Also I draw a loop with one resistor and show the induced current and the polarity of the resistor for follow up question.
This is my thinking:
The magnetic flux line is shown in blue that loop from the top back to the bottom. I draw just two loops, but it is understand it is all around 360 deg around the z axis(symetric around the z axis or:
[tex] \hbox { Both }\frac {\partial \vec E}{\partial \phi} \;=\; \frac {\partial \vec B}{\partial \phi} \;=\; 0 \hbox { in cylindrical coordinates. }[/tex]
I think the associate electric field look like the red circle. The circles are parallel with the xy plane. The direction of propagation of each point move as shown in direction of the [itex] \hat n [/itex] at every point. The direction of [itex] \hat n [/itex] is:
[tex] \hat n \;=\; \vec E X \vec B [/tex]
basically, I think the propagation of the TEM is outward in direction of the [itex] \hat n [/itex] at all points. tell me whether I am correct.
Feel free to download the pdf and draw what you think is right and post it back.
Furthermore, I would like to see how the varying magnetic field induce current and voltage into the loop with resistor. I know we have Faraday's Law, I just want to see the machenism.
thanks for the help
Alan
This is my thinking:
The magnetic flux line is shown in blue that loop from the top back to the bottom. I draw just two loops, but it is understand it is all around 360 deg around the z axis(symetric around the z axis or:
[tex] \hbox { Both }\frac {\partial \vec E}{\partial \phi} \;=\; \frac {\partial \vec B}{\partial \phi} \;=\; 0 \hbox { in cylindrical coordinates. }[/tex]
I think the associate electric field look like the red circle. The circles are parallel with the xy plane. The direction of propagation of each point move as shown in direction of the [itex] \hat n [/itex] at every point. The direction of [itex] \hat n [/itex] is:
[tex] \hat n \;=\; \vec E X \vec B [/tex]
basically, I think the propagation of the TEM is outward in direction of the [itex] \hat n [/itex] at all points. tell me whether I am correct.
Feel free to download the pdf and draw what you think is right and post it back.
Furthermore, I would like to see how the varying magnetic field induce current and voltage into the loop with resistor. I know we have Faraday's Law, I just want to see the machenism.
thanks for the help
Alan
Attachments
Last edited: