Question

The principle behind a thermostat switch is:-
a. unequal expansion of solids
b. unequal temperature of solids​

Answer 1

Answer:

b option is best due to my opinion

Answer 2

b. unequal temperature of solids

Thermostats work on the principle of thermal expansion. This principle governs the switching off or on of the electric circuit. The most common types of mechanical thermostats typically use either bimetallic strips or bellows filled with gas.

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