Is it true that net current fields weaken with increasing distance?

The statement that net current fields weaken with increasing distance is indeed accurate. This phenomenon is rooted in the fundamental principles of electromagnetism and is observed across various applications, including electrical systems and telecommunications.

As the distance from the source of the electromagnetic field increases, the intensity of the field diminishes. This decrease in strength is typically described by the inverse-square law, which states that the strength of an electromagnetic field diminishes proportional to the square of the distance from the source. In practical terms, this means that as you move further away from the current-carrying conductor or antenna, the effective strength of the electromagnetic field decreases, leading to weaker signals or current fields.

The principle is widely applicable and not limited to specific mediums, like fiber optics, or to certain frequency ranges. It holds true for all forms of wave propagation, whether in wires, air, or other materials, thus reinforcing the idea that current fields generally weaken with increasing distance from the source.