High School

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Is the oven thermal bulb a gas-filled capillary tube?

A. Yes, it is a gas-filled capillary tube.
B. No, it is a liquid-filled capillary tube.
C. The composition of the thermal bulb varies by oven type.
D. The thermal bulb is not related to gas or liquid.

Answer :

Final answer:

The oven thermal bulb is a liquid-filled capillary tube, which responds to temperature changes by expanding and triggering a temperature-regulating mechanism.

Explanation:

No, the oven thermal bulb is not a gas-filled capillary tube. The correct answer is B) No, it is a liquid-filled capillary tube. In common types of oven thermometers or temperature regulators, a thermal bulb contains a liquid that expands in response to temperature changes. The expansion of the liquid due to heating causes it to move through the capillary tube, which can trigger a mechanical or electrical response to maintain the desired oven temperature. It's different from the gas-filled tubes used in incandescent light bulbs or gas discharge tubes.

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