What is the primary function of a lightning horn in electricity transmission?

The primary function of a lightning horn in electricity transmission is to act as a ground for lightning strikes. This component is designed to dissipate the energy from lightning safely into the ground, helping to prevent damage to electrical equipment and infrastructure. By providing a direct path for the electrical energy to flow into the earth, the lightning horn minimizes the risk of surges that could otherwise result in equipment failure or catastrophic events. This grounding mechanism is critical in protecting the integrity of power transmission systems, as it ensures that the lightning energy does not affect operational components or safety.

The other options, while related to the broader context of electrical systems, do not accurately describe the specific role of a lightning horn. Generating electricity, redirecting lightning strikes, and securing electrical lines do not encompass the unique function that a lightning horn serves in managing and mitigating the effects of lightning on electrical transmission.