From what pole the electrons stay to what pole, and from which pole the electrons flow to which pole

First of all, it is noted that the direction of the current and the direction of the flow of electrons are opposite, as it is specified that the direction of the current is the direction in which the positive charge moves, while the electrons are negatively charged.

Why is it that in the galvanic cell of chemistry, the electrons are left at the negative electrode to the positive electrode, while in the circuit of physics, the positive electrode flows to the negative electrode? The question is to confuse the direction of current with the direction of electron flow, and it should be asked like this: Why is the electron in the galvanic cell in chemistry flowing from the positive electrode to the negative electrode, while the negative electrode flows to the positive electrode in the physics circuit?

In fact, this difference is not due to the difference between physics and chemistry, but the difference in the description object, the galvanic battery is the flow of electrons inside the battery, that is, in the power supply, and the wire (external circuit) connected to the galvanic cell is the kind of situation you call physics; And the circuit you are talking about in physics is the flow of electrons from the negative electrode to the positive electrode, which describes the flow direction of electrons in the external circuit, and the flow of electrons in the power supply is the same as the situation in chemistry.

So why are the external circuits and power supplies opposite? Actually, the reason is very simple, because the circuit is closed. You can draw the circuit icon and the direction of the current by yourself.

Physics is also the flow of electrons from the negative electrode to the positive electrode, and the flow of electric current from the positive electrode to the negative electrode.

Attention students.

Both physically and chemically.

The direction of the current is equal to the opposite direction of the flow of electrons.

Don't memorize science by rote.

It's the same with the chapter on electrolysis in chemistry.

The direction of the current is equal to the opposite direction of the flow of electrons.

Electrons in physics are also 、、、 flowing from the negative electrode to the positive electrode

Because long ago, scientists thought that electric current was caused by the movement of a positive charge, so the direction of the flow of a positive charge was defined as the direction in which the current moved.

But later scientists discovered that the positive charge does not move, and the current is caused by the movement of the negative charge (i.e., electrons). This creates a problem, which is that due to the opposite of the positive and negative charges, the direction of the current that was originally specified is opposite to the direction in which the electrons actually flow.

However, because the theory that "the direction of the current is the direction of the movement of the positive charge" has been used for a long time, it is not easy to change people's concepts, so scientists directly regard the movement of the negative charge as the movement of the positive charge in the opposite direction. So it becomes the convention that the direction of the current is the opposite of the direction of the negative charge (i.e., the direction of the positive charge moves).

In the chemical galvanic cell, since the gain and loss of electrons is the important essence of the reaction, in the galvanic cell, we only look at the movement of electrons, while in physics, we pay more attention to the direction of the current.

Therefore, in the galvanic cell of chemistry, the electrons are left at the negative electrode to the positive electrode, while in the circuit of physics, the current is from the positive electrode to the negative electrode.

Electrons flow from the negative electrode to the positive electrode, and the current flows from the positive electrode to the negative electrode, the electron is the earliest elementary particle discovered, and the negative charge with the electric power is coulomb, and the electron is the smallest unit of electric power.

Scientifically, the amount of electricity passing through any cross-section of the conductor per unit time is called the current intensity, referred to as the current, the current symbol is I, and the unit is ampere (a) ride, referred to as "ampere" (old rough Andre Marie Ampere.

The electron outflow pole is the negative pole, and the negative electrode is the lower end of the power supply with lower potential (potential). In galvanic cells, it refers to the electrodes that act as oxidation, and the battery reaction is written on the left. In an electrolytic cell, it refers to the electrode that acts as a reducer, as distinguished from a galvanic cell.

From a physical point of view, it is the pole where electrons flow out of the circuit.

The first elementary particles to be discovered. Negatively charged, the amount of electricity is coulombs, which is the smallest unit of electricity. The quality is.

Commonly used symbol E table grip macro display. It was discovered in 1897 by the British physicist Joseph John Thomson while studying cathode rays. All atoms are made up of a positively charged nucleus and a number of electrons moving around it.

The directional motion of the charge forms an electric current, like the current in a metal wire. By using electric and magnetic fields, it is possible to control the movement of electrons (in solids and vacuums) as needed, and to manufacture various electronic instruments and components, such as various electron tubes and electron microscopes. The wave properties of segment trapped electrons were confirmed by crystal diffraction experiments in 1927.