Kettle - Working Principle Flashcards

1
Q

The working principle of the kettle relates to four areas of the kettle, name these areas

A

Heating element

Water heats

Thermostat

Boil-dry device

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2
Q

What is the working principle of the heating element of the kettle
(2)

A

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

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3
Q

What causes the element to heat up?

A

The flow of electricity through the heating element which offers resistance to the flow of electricity

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4
Q

What is the working principle of the water heating in the kettle?
(3)

A

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

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5
Q

How is the water heated?

A

The heated element heats the water surrounding it by creating convection currents

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6
Q

What is the working principle of the thermostat in the kettle?

A

When the water reaches 100 degrees Celsius the thermostat integrated in the base will automatically turn off the flow of electricity to the kettle

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7
Q

At what temperature does the thermostat automatically turn off the flow of electricity to the kettle?

A

At 100 degrees Celsius

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8
Q

What does the thermostat do when the water reaches 100 degrees Celsius?

A

The thermostat integrated in the base will automatically turn off the flow of electricity to the kettle

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9
Q

What is the working principle of the boil-dry device?

2

A

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

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10
Q

What does the boil-dry device prevent?

A

It prevents overheating or an electrical fire

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11
Q

How does the boil-dry device prevent overheating or an electrical fire?

A

It automatically turns off the flow of electricity to the kettle if there is insufficient water to cover the element

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