Square Loop Current: Vector Potential Zero w/ 2 Sides

Thread starter shehab
Start date Nov 17, 2007
Tags

Current Current loop Loop Square

AI Thread Summary

In a square loop current, the vector potential can be zero at specific points due to the symmetry of the loop. The discussion clarifies that the vector potential is indeed zero at the center of the loop, not just along the two sides parallel to the x-axis. This phenomenon occurs because the contributions from opposite sides of the loop cancel each other out. The focus is on understanding how the geometry of the loop influences the vector potential. Overall, the cancellation effects of the current in the square loop lead to a zero vector potential at the center.

Nov 17, 2007

shehab

how could a current in a square loop has a vector potential be zero due to 2 sides only.

Last edited: Nov 17, 2007

Physics news on Phys.org

Nov 17, 2007

Crosson

I believe the vector potential is zero in the center of loop only.

Nov 17, 2007

shehab

do you mean at the center the vector is zero inside the loop. or only for two sides that are parallel to the x axis.

Thread 'Reflections at the source point of a transmission line'

I was using the Smith chart to determine the input impedance of a transmission line that has a reflection from the load. One can do this if one knows the characteristic impedance Zo, the degree of mismatch of the load ZL and the length of the transmission line in wavelengths. However, my question is: Consider the input impedance of a wave which appears back at the source after reflection from the load and has traveled for some fraction of a wavelength. The impedance of this wave as it...

View full post »