Final answer:
The invisible fields generated by an electrically charged conductor are known as electromagnetic waves, which are composed of perpendicular electric and magnetic fields that propagate through space.
Step-by-step explanation:
The invisible electric and magnetic fields generated by an electronically charged conductor are known as electromagnetic waves. Electromagnetic waves consist of both an electric field, denoted as E, and a magnetic field, denoted as B. These fields are perpendicular to each other and combine to produce a self-propagating wave that moves through space at a constant speed of approximately 3 × 108 m/s, which is also the speed of light represented by c.
When an electric current, which is a moving electric charge, flows through a conductor, it generates these electromagnetic fields. If the current oscillates, as in alternating current (AC), these fields give rise to electromagnetic radiation in the form of waves. The electric and magnetic fields in an electromagnetic wave are interdependent; a change in one field induces a change in the other, allowing the wave to propagate through both empty space and various mediums, with the propagation speed changing depending on the medium.