Which term refers to the device that emits light when connected to a power source?

Which term refers to the device that emits light when connected to a power source?

• A. Shelter
• B. Acid rain
• C. Light bulb
• D. Endanger

Answer: (C)

When a device emits light by being plugged in, it’s performing energy conversion: electrical energy is turned into light energy. The term that names this device most precisely is light bulb. A light bulb is designed to connect to a power source and produce visible light (and some heat) through electrical current, encompassing various types like incandescent, LED, and fluorescent bulbs that serve the same lighting purpose. The other terms don’t describe a lighting device at all: shelter refers to a place of refuge, acid rain is polluted precipitation, and endanger means to put something at risk. So, light bulb is the best match for a device that emits light when connected to power.

When a device emits light by being plugged in, it’s performing energy conversion: electrical energy is turned into light energy. The term that names this device most precisely is light bulb. A light bulb is designed to connect to a power source and produce visible light (and some heat) through electrical current, encompassing various types like incandescent, LED, and fluorescent bulbs that serve the same lighting purpose. The other terms don’t describe a lighting device at all: shelter refers to a place of refuge, acid rain is polluted precipitation, and endanger means to put something at risk. So, light bulb is the best match for a device that emits light when connected to power.