_________ have been utilized in thermostats for years. They are mechanically connected to a switch, such as a mercury switch, to control heaters.

_________ have been utilized in thermostats for years. They are mechanically connected to a switch, such as a mercury switch, to control heaters. Correct Answer Bimetallic

It’s utilized to convert a temperature change into mechanical displacement. The strip consists of 2 strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass.
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