ALA Lighting Specialist Practice Exam

Incandescent bulbs are widely known for their low energy efficiency and relatively short lifespan compared to other lighting options. The main reason for this is that they convert a significant amount of energy into heat rather than light, which not only wastes energy but also contributes to higher electricity bills for consumers. Additionally, the typical lifespan of incandescent bulbs is about 1,000 hours, whereas LED and fluorescent bulbs can last much longer, making them more cost-effective over time. This lower efficiency and reduced lifespan highlight the disadvantages of incandescent bulbs in modern lighting applications where energy conservation and longevity are increasingly prioritized.