Which of the following causes the shortening effect on multi conductor folded dipole?

Which of the following causes the shortening effect on multi conductor folded dipole? Correct Answer Only thickness of conductors

The shortening effect on the multi conductors depends on the thickness of the conductor whereas in wires it depends on the length and the frequency of operation.

Related Questions

A magnetic dipole of dipole moment $$\overrightarrow {\bf{m}} $$ is placed in a non-uniform magnetic field $$\overrightarrow {\bf{B}} .$$ If the position vector of the dipole is $$\overrightarrow {\bf{r}} ,$$ the torque acting on the dipole about the origin is