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How does an electric kettle know when the water reaches boiling point?
Wiki User
∙ 13y ago
First, a 'Bi-metallic Strip' consisting of two different metals, having different 'Coefficients of Expansion', fused together in a two-layer strip which is connected electrically to the kettle element power supply.
It is placed in a chamber, generally in the kettle handle, where steam from the top of the kettle can come into contact with the chamber holding the metal strip. (Not with the strip itself).
When at room temp., the electrical contacts are closed allowing current to flow to the Element when power is switched on.
When the kettle boils, steam is passed around the chamber that contains the strip, causing it to heat up.
The metal having the higher 'C of E' of the two making up the bi-metal strip, will expand more than the other, causing the strip to bend and open the contacts, thus shutting off the power.
Wiki User
∙ 13y ago
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When does gas changes to liquid?
When it reaches it's boiling point.
Liquid alcohol will change to vapor when its temperature reaches the A boiling point B fusing point C freezing point D melting point?
A given form of liquid alcohol will turn to vapor at its boiling point, which is different for each type of alcohol.
How does all of a kettle of water boil when it is heated from the bottom?
Kettles have an element at the bottom, which is heated up by the electric current connnected to it. As the current flows through the plug and the connection, the element becomes extremely hot and disperses the heat throughout the water, at this stage you see tiny bubbles rising from the element. After a minute or so, the water reaches boiling point, starts to agitate, and the steam comes out of the spout of the kettle. If you have a whistling kettle, this is when the steam is forced through a small hole, causing the whistling sound the kettle makes when the steam goes through it. Now you are ready to make that cup of tea.
How is the boiling of liquid related to the evaporation process?
Evaporation is partial boiling. When a liquid reaches its boiling point, no molecules of water will stay liquid and evaporation is at 100%.
When you change the amount of a substance the time it takes to reach the boiling point then what happens?
The lower the amount of substance, the faster it reaches the boiling point. The more the amount of substance, the longer it takes to reach the boiling point. Hope that this is what you wanted to know! :)
What is the boiling point of a kettle?
That would be the boiling point of water, or somewhere below if the kettle is faulty. The boiling point of water is 100 degrees Celsius.That would be 212 degrees Fahrenheit.
How does a kettle turn off?
An electric kettle basically is a kitchenware piece, usually made of durable plastic or stainless steel and are powered by electricity. This allows someone to quickly heat water for hot drinks like tea or coffee. Once the water inside reaches the boiling point (212 degrees Fahrenheit), the kettle automatically deactivates itself to avoid the contents from boiling away and damaging the heating element. The older manual kettles are heated over a flame or electrical element but do no have any wiring. The boiling point is indicated by a whistle activated by the escaping steam, at which point the kettle should be removed from the heat source.
How a normal kettle works?
A normal kettle is a semi-closed metal container (with lid and spout) of water. When placed on a flame, the water inside the kettle heats up until it reaches boiling point. It is then ready to be taken off the flame and the boiling water poured into a teapot, or some other beverage, etc.
What change of state occurs when a substance reaches it's melting point. What occurs when it reaches it's boiling point?
When a substance reaches its melting point it changes from solid to liquid. When a substance reaches its boiling point it changes from liquid to gas.
Need a sentence for boiling point?
When the water reaches boiling point, add the potato flakes.
At what point will a liquid turn into a gas?
When it reaches its boiling point
How do you work a kettle?
Electric kettel:Electricity travels through the element inside the kettle, but resistance to the flow of electricity causes heat. The heat is then conducted into the water. When the water reaches boiling point, the steam heats up a 'Bimetallic Strip' which is made up of two different strips of metal, which bends because one of the metals expands faster than the other. This breaks the circuit, and the electricity doesn't get through the element until the bimetallic strip has cooled down.Non-electric kettel:It works by the plate on the bottom of the kettle heats up then it will heat the water up to boiling point
To evaporate do you need a high or a low boiling point?
Evaporation begins when a substance reaches its boiling point.
What is something that can represent a short temper?
A boiling kettle is a metaphor that could represent a short temper. Just like a kettle whistling when the water inside reaches its boiling point, a person with a short temper might quickly reach a point of frustration or anger.
When do a liquid turn into a gas?
When it reaches its 'boiling point'.
When the kettle boils how hot is the steam in celsius?
It will be the boiling point of water: 100oC
What is the ignition temperature of vegetable oil?
Vegetable oil reaches a smoke point before it reaches its boiling point. Its smoke point is around 495F and its boiling point edges up towards 572F.
