The usefulness of a bimetallic strip is due to differences in

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The usefulness of a bimetallic strip is due to differences in expansions of metals. A bimetallic strip is made up of two different metals, each having a different coefficient of thermal expansion. When the strip is heated or cooled, the two metals will expand or contract at different rates, causing the strip to bend one way or the other. This bending can be used to actuate a mechanical switch or to provide mechanical feedback in various devices. The differences in conductivity and heat capacities of metals do not play a significant role in the functioning of a bimetallic strip.

The Usefulness of a Bimetallic Strip Is Due to Differences