A bimetallic strip consists of two thin strips of different metals. The metals expand by different amounts when heated. The diagram shows what happened when three different bimetallic strips are heated. Which metal expands the least when heated? Give reason.
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The bimetallic strip is made of two metal strips, stuck together. One of the metals expands much more than the other when they are heated. This causes the strip to bend. A bi-metallic strip can be used as a sensor in a thermostat.
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A constant governing the degree to which extent the length of the solid will change on the application of the temperature.
This is known as the coefficient of linear expansion.
A bimetallic strip consists of two thin strips of different metals
Hence, the two metals have different coefficients of linear expansion in a bimetallic strip.
The bimetallic will bend more which has a higher coefficient of linear expansion.
As the other metal is not so responsive to temperature in comparison to other metals.
This causes the bimetallic strip to bend to one side.
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