When making an extension from linear dipole antennas to small circular antennas, I am only coming across expressions for a magnetic dipole moment (as opposed to having just an electric dipole moment for a linear dipole antenna). The expression being: m = πr2I at its peak The above expression makes perfect sense and is not the problem, rather why only mention a magnetic dipole moment (M1) and no electric dipole moment (E1). Shouldn't it have one also? Or does its azimuthal symmetry (φ dependence) cancel out the effect, leaving only a magnetic dipole moment? Thanks in advance. I would appreciate any insights!