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How Many Ohms Are in a Light Bulb?

Published in Electronics 1 min read

The resistance of a light bulb, measured in ohms, varies depending on the type of bulb and its wattage.

Incandescent bulbs typically have a resistance between 50 and 1,000 ohms, depending on the wattage. For example, a 60-watt incandescent bulb might have a resistance of around 240 ohms.
LED bulbs have much higher resistance, often in the range of thousands of ohms. This is because they are much more energy-efficient than incandescent bulbs and require less current to operate.

It's important to note that the resistance of a light bulb can change slightly as it heats up. This is because the filament in an incandescent bulb expands as it heats, which increases its resistance.


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