What are the safety knowledge of electricity consumption in spring?

A: This is a kind of energy. It is not produced out of thin air, but is transformed from water, heat, mechanical energy, atomic energy and other energy.

2. What is current?

Answer: the water flowing in the water pipe is called water flow, and the electricity flowing in the wire is called current. That is to say, electric energy flows regularly in a certain direction along the object that transmits electricity, and it is invisible and intangible. The current speed is 300 thousand kilometers per second.

3. What is voltage?

A: Voltage is also called potential difference, which means the same as water level difference. The height difference of water surface is called water level difference or water pressure. The greater the water level difference, the faster, farther and faster the water flow. The potential difference is called potential or voltage. The higher the voltage, the farther the current travels.

4. What is command?

A: An object through which current can pass, that is, something that can conduct electricity, is called a conductor. All kinds of metals are conductors. Some liquids can conduct electricity like daily water, objects containing water can also conduct electricity, human bodies can also conduct electricity, the earth can also conduct electricity, and all kinds of animals and plants can conduct electricity. All these are conductors.

5. What is an insulator?

A: Anything that is not easy to conduct electricity is called an insulator. Such as plastic, rubber, ceramics, glass, bakelite, dry air and wood, dry cotton cloth, etc. , do not transmit electricity, are insulators.

6. Why does the human body get an electric shock?

Answer: If a person stands on the ground and his body touches something charged, his body can conduct electricity, and the ground can also conduct electricity.

When current is conducted to the ground through the human body, people will get an electric shock.

7. Why does electric shock electrocute people?

A: The longer the electric shock lasts, the more serious the consequences will be. The higher the voltage, the more dangerous it is; The greater the current.

The greater the harm to people. Severe electric shock will stimulate people's central nervous system and heart, thus inhibiting people's breathing or interrupting blood circulation, and people will die.

8. What if there is an electrical fire?

Answer: When you smell burning rubber or burning plastic, check the wires quickly. If you find that the wire is burnt out, open the brake box immediately. When an electrical fire occurs, the power supply should be cut off first to put out the fire. Before cutting off the power supply, you can't put out the fire with water, because water is conductive. You should cover the fire with mud or sand. After the switch is turned on, the fire can be put out in any way, and there will be no electric shock accident due to fire fighting.

9. How to pay attention to electricity safety in daily life?

Answer: in daily life, first of all, don't pull it privately. Unauthorized connection is a violation of the electricity system, the installation does not meet the requirements, and accidents are prone to occur; In addition, when replacing and wiping the light bulb in daily life, turn off the current first, don't wipe the light bulb with wet hands or wet cloth, stand on a wooden bench or table, and don't wipe it on the ground to prevent the switch from failing and leaking electricity; The metal part of the screw bulb is connected with the ground wire. When the light is on, the lamp holder has electricity, which is unsafe. The exposed screw part will get an electric shock when people touch it, so pay special attention.