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Is that the Ω (ohm) symbol you are referring to? An ohm is the unit of electric resistance.

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βˆ™ 15y ago
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βˆ™ 5mo ago

The horseshoe symbol on a light bulb typically indicates that the bulb is energy efficient and complies with energy-saving regulations. It may also represent the bulb's eco-friendly or low environmental impact design.

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Q: What does the little horseshoe mean on a light bulb?
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What does the yellow horseshoe shaped warning light mean?

the horseshoe shaped light is your low tire pressure warning light. check your tire pressure in all of your tires. the light will turn off once the tires are at the proper PSI.


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The center of a light bulb is called the filament. It is a thin wire that produces light when electricity passes through it, causing it to heat up and emit light.


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