How does electricity typically travel?

Electricity typically travels in a closed circuit only. A closed circuit allows electric current to flow continuously through the entire path, which includes sources of power, conductors, and electrical devices. This is fundamental to understanding how electrical systems operate, as an open circuit would break the path and halt the flow of electricity.

The other options present concepts that do not accurately describe how electricity travels. Open currents through insulators, for example, are not viable since insulators are materials that do not conduct electricity effectively. Similarly, while electricity can technically travel in a vacuum, it is not an efficient path for flow and is not the standard means of electrical transmission encountered in everyday systems. Finally, electricity does not travel equally in all directions; it follows the path of least resistance dictated by the circuit design. Understanding these principles helps clarify the mechanics of electricity in practical applications.