What is the maximum duration of a torch?

The maximum duration of a torch being four hours indicates that it is designed to provide sustained illumination for an extended timeframe without requiring a battery change or recharge. This duration is typically based on the average usage in scenarios where a torch may be needed, such as during emergencies, camping trips, or power outages.

Design features of such a torch likely include energy-efficient bulbs and high-capacity batteries that maximize the amount of light emitted while minimizing battery drain. It is common for manufacturers to specify the maximum duration to help users plan accordingly and ensure they have reliable light when needed most. This four-hour limit demonstrates a balance between performance and practicality, making it a standard for many portable lighting devices.

In comparison, the other options represent shorter or longer durations that may not adequately meet the functional requirements expected by typical users in various contexts.