What is Electricity? How does electricity travel?

In our daily lives, electricity is used almost everywhere. But what exactly is electricity? We know that matter is made up of molecules, and molecules are made up of atoms, which in turn are made up of nuclei and electrons.

The nucleus is positively charged, the electrons are negatively charged, the two are usually in equilibrium, and they are not electrocharged externally, once the electrons escape the bondage and flow in the circuit by the action of the applied energy, which produces what we usually call an electric current.

Electricity can only be presented when a substance gains or loses electrons.

To put it simply, electricity is electrical energy and electric current is the flow of electrons; Electricity is transmitted through conductors

What are the factors that cause the propagation of electricity? So we first need to figure out what is the propagation of electricity?

First of all, the propagation of electricity means that it wants to transfer the current existing in one substance to another substance, for example, you have a battery, which is a thing that has electricity, and then it has to be channeled through some leads to another substance that does not exist in the brain to store electricity, such as a light bulb, we can find that when the battery is connected to two hoses, we find that the light bulb is on, which is the propagation of electricity.

So what do you need for electronic communication? First of all, you have to use some battery and something like that, and then prepare two wires, not necessarily positive and negative, but also a light bulb, which means that he is connected to something that can highlight the current, which is the propagation of electric digging land.

The electric field travels at the speed of light at 300,000 kilometers per second.

Electricity transmission is the "sixth mode of transport" after road, rail, waterway, air and pipeline transport. The electric field is transmitted at the speed of light at 300,000 kilometers per second, and the power generation, transmission, distribution, and consumption are completed at the same time. In order to reliably supply electricity and optimize resources and reduce the cost of electricity, we connect transmission lines into a large grid for people to use.

The speed of propagation of the electric field can circle the Earth about 8 times per second.

Background materials for popular science in electric power:

1. The journey of electricity:

Electricity generation - transmission - substation - distribution - electricity consumption.

Electricity is generated through the power plant, and the current flows out of the step-up substation and enters the high-voltage line. The voltage is then lowered through the substation for use in factories and large shopping malls, and the voltage is lowered through the transformer for domestic use.

2. The principle of electric voltage change.

People can store water in jars, but electricity cannot be stored, it has to be made in an instant and delivered through wires. In order for the current to travel farther, the voltage must be added to the electricity. When the current flows out of the step-up substation, it enters the high-voltage line.

High-voltage lines are erected away from the ground and on huge towers, carrying electricity from the power station to various places.

3. The energy that can generate electricity mainly includes the car

The energy sources that can generate electricity are mainly divided into traditional energy and renewable energy. At present, China mainly relies on traditional energy power generation. Traditional energy sources include coal, oil, natural gas, etc.; Renewable energy sources include nuclear, hydro, geothermal, solar, wind, etc.

4. Why do you want to base the patrol line?

Line workers patrol along the power tower to check whether the equipment is complete, if it is damaged, it should be reported to the superior department in time, repair, and roll so as not to delay the normal transmission of power supply. Because some lines have to cross mountains and rivers, or between lofty mountains and mountains, the patrol work is very difficult. After the UHV lineman boarded the high-voltage line, the closest distance from the ground was 12 meters, and the highest was 800 meters.

Psychological quality and physical fitness must be absolutely excellent.

5. What does 1 kWh of electricity do?

The best running 1 kilowatt-hour of electricity: the electric bike runs about 80 kilometers.

Coolest 1 kWh of electricity: Ordinary electric fans run for about 15 hours.

Cleanest 1 kWh of electricity: 9 watts of energy-saving lamps are on for more than 100 hours.

The most entertaining 1 kWh: about 10 hours of watching TV.

The most thirst-quenching 1 kilowatt-hour of electricity: boil about 8 liters of water.

The most heat-dissipating 1 kWh of electricity: about 15 bottles of beer are produced.

The warmest 1 kWh of electricity: about 10 meters of weaving.

References].

1. It should be said that the electric energy is always transmitted to the load by the power supply, that is, in the positive half of the alternating current, the current flows from the power supply to the load, and the load consumes electric energy.

2. The velocity of electrons in a conductor is approximately the speed of light and has nothing to do with its direction. 50Hz is the number of times you change direction per minute.

3. If there is an electric potential, the current will flow, but the current cannot determine the level of the electric potential.