A line with no connected load will exhibit what type of field around it?

In the context of electrical principles, a line with no connected load will exhibit a voltage field around it. When a transmission line is energized but not connected to any load, it maintains an electric field due to the voltage present in the conductors. This electric field emerges from the potential difference between the conductors and the surrounding ground.

The existence of this voltage field is essential in understanding how electrical power is transmitted. Even in the absence of a load, the line still carries voltage that creates an electric field around it. This field is significant in terms of safety and electromagnetic interference consideration, which is why proper insulation and clearance are vital in the design and layout of power lines.

This understanding emphasizes the relationship between voltage and electric fields, as the electric field strength is directly related to the voltage present. The other options do not accurately describe the situation where a line has no connected load but remains energized: a strong magnetic field would typically be associated with current flow, an unstable field would imply fluctuating conditions that aren't specific to an unloaded line, and a neutral field doesn't convey the presence of voltage appropriately.