Kettle - Working Principle Flashcards
The working principle of the kettle relates to four areas of the kettle, name these areas
Heating element
Water heats
Thermostat
Boil-dry device
What is the working principle of the heating element of the kettle
(2)
When a kettle is plugged in and switched on electricity flows through the heating element, which offers resistance to the flow of electricity
This causes the element to heat up
What causes the element to heat up?
The flow of electricity through the heating element which offers resistance to the flow of electricity
What is the working principle of the water heating in the kettle?
(3)
The heated element heats the water surrounding it by creating convection currents
As the water heats it begins to rise and the colder water at the top falls down to the base
It continues circulating until all the water reaches the same temperature
How is the water heated?
The heated element heats the water surrounding it by creating convection currents
What is the working principle of the thermostat in the kettle?
When the water reaches 100 degrees Celsius the thermostat integrated in the base will automatically turn off the flow of electricity to the kettle
At what temperature does the thermostat automatically turn off the flow of electricity to the kettle?
At 100 degrees Celsius
What does the thermostat do when the water reaches 100 degrees Celsius?
The thermostat integrated in the base will automatically turn off the flow of electricity to the kettle
What is the working principle of the boil-dry device?
2
Most kettles contain a boil-dry device that automatically turns off the flow of electricity to the kettle if there is insufficient water to cover the element
This prevents overheating or an electrical fire
What does the boil-dry device prevent?
It prevents overheating or an electrical fire
How does the boil-dry device prevent overheating or an electrical fire?
It automatically turns off the flow of electricity to the kettle if there is insufficient water to cover the element