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A bimetallic strip consists of two metal strips fastened together. Metals are chosen that expand at different rates when the strips get hot. When one strip gets longer than the other, the combination has to bend. These strips are often used in thermostats in houses to control the house temperature. When the strip is cold, it bends one way, and as it gets hotter it bends the other way. You can build the strip into a control box so that when it is cold, it closes an electric circuit and turns on the heat. When it gets a bit warmer, it will bend away from the contact point and open the circuit, turning off the heat. It will sit there all day and night turning on the heat when it gets a little cold and turning it off again when it is warmer.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoA bimetallic strip curves when heated because the two metals expand at different rates, thus making one strip longer than the other at an elevated temperature. Since the two metals are bonded together, the strip is forced into a curve to accomodate the resulting difference in length of its two parts.
Wiki User
∙ 13y agoA bimetallic strip responds to temperature changes by bending.
The strip is composed of two different metals, each have a different thermal expansion characteristics. They are bonded together. Since they have different temperature characteristics, changes in temperature result in the strip bending. If there are contacts on the end of the strip, they can function as an on/off thermostat. Many times, the strip is coiled up into a spiral. When that is done the amount of bend is increased, increasing sensitivity, and the end of the strip moves along the tangent of the spiral. The philosophy, though, is the same.
Depending on the intent, the temperature change can be generated by ambient temperature, such as in a thermostat application, or by current through the bimetallic strip, such as in a circuit breaker application.
Wiki User
∙ 11y agoIf a bimetallic strip is cooled it will go go straight instead of bent. I guess you have the same stupid science homework as me! :-(
Anonymous
Wiki User
∙ 14y agoThe bimetallic strip bends.
Wiki User
∙ 11y agoIt Melts:P.
Anonymous
if a straight bimellalic strip is cooled i
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When a bimetallic strip is heated it bends toward the metal with the thermal expansion?
... smaller ...
What is two strips of different metals welded together causing the strip to bend when heated?
That's a "bi-metal" or "bi-metallic" strip.
What is bimetallic strip made of?
A bimetallic strip is made out of steel and iron
What is a bimetallic strip and where can it be used?
A bimetallic strip is a strip with two metals bonded together. It can be found in thermostats
Why does a bimetallic strip bend when heated?
A bimetallic strip bends when heated because it is composed of two different types of metal. The different metals form the two sides of the strip expand and contract at different rates when subjected to a temperature change. When heating a bimetallic strip, one side of the metals expands faster than the other, making it longer. Because it is bonded to the other metal, it cannot expand in a straight line. The only way the two metals can stay bonded while expanding at different rates, is for strip to bend, one side becoming longer than the other.
What happens when bimetallic strip is heated?
The bimetallic strip bends.
Why is a bimetallic strip curve when it is heated or cooled?
Because the two metals have different coefficient of linear expansion
Does the bimetallic strip bend when heated?
yes
What changes takes place when bimetallic strip is heated?
actually what happen is that the strip is curved to the outside
Why bimetallic strip bend in curve instead of showing linear expansion on heating?
If one metal expands or contracts at a different rate than the other, and they are bonded together, as they are in a bimetallic strip, a curve is inevitable - it physically has to happen, if you think about it.
When a bimetallic strip is heated it bends toward the metal with the thermal expansion?
... smaller ...
What is the principel of bimetallic strip?
A bimetallic strip is made from two combined metal strips that have different rates of expansion when heated. This causes the strip to bend and so close or open an electrical contact switch.
What uses bimetallic strip?
Appliances like electric iron, which need a cut off from the electric current from time to time as the appliance is heated adequately, use bimetallic strip for this.
What happens to bimetallic strip when it is heated and cooled?
The two metals have different expansion rates when the strip is heated. This means that one of the metals will expand more than the other, causing the strip to bend.
What is two strips of different metals welded together causing the strip to bend when heated?
That's a "bi-metal" or "bi-metallic" strip.
What is bimetallic strip made of?
A bimetallic strip is made out of steel and iron
Why does a bimetallic strip bend when heated?
A bimetallic strip bends when heated because it is composed of two different types of metal. The different metals form the two sides of the strip expand and contract at different rates when subjected to a temperature change. When heating a bimetallic strip, one side of the metals expands faster than the other, making it longer. Because it is bonded to the other metal, it cannot expand in a straight line. The only way the two metals can stay bonded while expanding at different rates, is for strip to bend, one side becoming longer than the other.
