What is electricity? Definition of Electricity Explained..

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Transcript

00:00It took me two and a half years to finally figure out what electricity is.

00:03It's actually very simple. Imagine an atom as a solar system.

00:08The nucleus in the middle is like the sun, and the electrons around it are like the eight planets.

00:14The difference is that we cannot predict the exact position of an electron at a certain moment.

00:20We can only describe the probability of an electron appearing in a certain area in the

00:24form of an electron cloud. The behavior of these difficult-to-describe electrons

00:30determines the existence of electricity. Compared with the huge mass of the nucleus,

00:36the electron is like a speck of dust in the universe, which can easily fly out of the atom.

00:42However, the current generated by this is that in a stable state, the number of protons in the

00:48atom is equal to the number of electrons, and the number of positive charges of protons

00:54is balanced with the number of negative charges of electrons.

00:58Atoms are uncharged in the ground state, but when atoms lose or gain electrons,

01:03the atomic charge will lose balance, thus forming positive or negative ions.

01:09At the same time, since each electron layer of an atom can accommodate a limited number of electrons,

01:16the newly added electrons will always give priority to filling the outer electron layer

01:21with vacancies. When the outer electron layer is filled, the atom will return to a stable state.

01:28This situation often happens in life. For example, when we rub the carpet with our feet,

01:34the electrons on our body will be absorbed by the carpet, and the carpet will not easily

01:39release electrons, so our body will be positively charged. At this time, if we touch the door handle

01:46with our hands, we will immediately feel a sharp electric shock. This is because the metal door

01:52handle is a conductor, and its outer electrons are easily lost. The electrons will quickly

01:58transfer to the body to restore the balance of charge. It is in this gain and loss that

02:04the movement of charge generates electricity. Like and follow for more informative 3D videos.

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