What is the criterion of choosing the two metals for a bimetal strip? - Physics

Short Note

What is the criterion of choosing the two metals for a bimetal strip?

Solution

Two different metals are used for regulating temperature in an electrical device as the strip bends due to different coefficients of expansion on excessive heating due to current, thus breaking the electrical circuit until the strip cools down to a preset point.

Concept: Reactivity of Metals with Cold Water, Hot Water and Steam (With Products Formed).
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APPEARS IN

Frank Class 9 Physics ICSE
Chapter 5 Heat
Thermal Expansion | Q 3.2 | Page 202