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 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.
It depends on the capacity of the kettle and the size of the bath, but generally it could take anywhere from 30 minutes to 1 hour to fill a standard bath using a kettle. Using a kettle to fill a bath is not recommended as it can be time-consuming and inefficient.
The first energy level can take a maximum of two electrons.
In the 3rd energy level, there can be a maximum of 4 electrons.
By 1liter concentrated coolant oil and mix with 3liters of water and fill the expansion bottle up to the maximum level
Well, honey, technically you can fill a kettle from the spout, but it's not the smartest move. It might be a bit messier and harder to control the water flow. Plus, it could lead to mineral build-up over time. But hey, you do you, just be prepared for a little extra cleaning down the line.
The second energy level can hold a maximum of 8 electrons. This is based on the formula 2n^2, where n is the principal quantum number representing the energy level.
The third energy level can hold a maximum of 18 electrons.
The first energy level can hold a maximum of 2 electrons, filling the 1s orbital. The second energy level can hold a maximum of 8 electrons, filling the 2s and 2p orbitals.
The maximum fill capacity allowed for NEC conduit fill in electrical installations is 40.