original_query: What is the expression for the flux in terms of the feedpoint current and the ratio of the short dipole's length to the wavelength of radiation?
query: What is the expression for the flux in terms of the feedpoint current and the ratio of the short dipole's length to the wavelength of radiation?
answer: The expression for the flux is given by  (ζ0 * I0² * L² * sin²(θ))/(32π² * r² * ε0)