What are the differences between a ridge vent and an attic fan in terms of ventilation efficiency and effectiveness?

A ridge vent is a passive ventilation system that runs along the peak of the roof, allowing hot air to escape from the attic. It is generally more efficient and effective than an attic fan, which is an active ventilation system that uses electricity to push hot air out of the attic. Ridge vents provide continuous ventilation without the need for electricity, making them more cost-effective and reliable in the long run.