Because if there is nothing in it then it cant boil!
The kettle will warp and not sit squarely on the burner and it might cause the finish or interior to heat up and smell horrible. Do it often enough or long enough and it'll be ruined.
It takes far too long to boil that much water. If you're looking to be efficient a kettle that is filled just over the amount you will need is best.
Because it'll take longer to boil.
it is a waste of electricity
This depends entirely upon the maximum capacity of your kettle. It should tell you on the side.
An eco kettle may just look like a electric jug kettle but it allows the people who buy it to fill it to its maximum. It also allows you to boil what liquid you put in it.
In the 3rd energy level, there can be a maximum of 4 electrons.
The first energy level can take a maximum of two electrons.
By 1liter concentrated coolant oil and mix with 3liters of water and fill the expansion bottle up to the maximum level
Fill the tire to the level specified on the sticker on the drivers door jamb, or in the owners manual. That is the pressure that the vehicle manufacturer requires.
The maximum is 18. This follows the law maximum = 2n2 where n = shell number, ie in this case n=3, 2n2=18.
Actually, kettles come in different sizes. A tea kettle would usually have a capacity of a few liters.
plug it in into the wall, fill it up with water, turn it on and when it clicks off the water is boiled
it is because it has a large number of steam in it>>>>try it its best answer
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