Why does the light come on its own room light .

There are many reasons why the lights come on themselves, but most of them are related to the switch. There are also some to see what kind of lamp, such as fluorescent series, if the switch does not distinguish between the zero live line, the switch controls the zero line will also see the light on at night when the light is dark, but the bright light is not strong, and there are some voice-controlled, sound and light controlled, and the light will be on when the sound is loud.

It may be that in some places the lines have merged, causing the lights to come on. It is estimated that the insulation is not well done!

short circuit in the wire; I never believe in ghosts, whether there are other people who have gone in, and it is possible that the switch insulation has failed, and the specific ones will be known after investigation, anyway, there is a scientific answer.

Poor switch contact.

You can change the switch and try it.

The wire of the switch should be connected to the neutral wire. Connecting to the neutral line will result in the following:

1. If the voltage is unstable, it will flash or light up if you don't move the switch.

2. If the switch controls the neutral line, the wires before and after the switch are always in a live state, which is a very dangerous thing. The resistance of electrical appliances is generally far less than the resistance of people, when people touch the zero line of the electrical appliances to the switch, it is equivalent to connecting them in series with the electrical appliances to the live wire, and the foot is the earth, the voltage between the fire wire and the earth is 220V, and the resistance of people is greater than that of electrical appliances, so most of the voltage falls on people.

Check whether it is connected to the neutral line, and see if the light will flash when you turn off the light at night. The fire wire will be dimmed immediately, and it will not appear to be bright on its own.

Electric lamp is the conversion of electrical energy into light energy, in order to provide lighting equipment, appeared in the second industrial revolution, its working principle is: the current through the filament (tungsten filament, melting point of more than 3000) when the heat is generated, the spiral filament continues to gather heat, so that the temperature of the filament reaches more than 2000, the filament in the incandescent state, like the red-hot iron can shine and emit light.

The higher the temperature of the filament, the brighter the light emitted. Therefore, it is called incandescent lamp, from the perspective of energy conversion, when the lamp emits light, a large amount of electrical energy will be converted into heat energy, and only a very small part can be converted into useful light energy. The light emitted by electric lamps is panchromatic light, but the proportion of each color is determined by the luminescent substance (tungsten) and temperature.

The imbalance in proportions leads to a color cast in the light, so the color of the object is not realistic under incandescent light.

Related Notes:

Lighting electric light sources are generally divided into three categories: incandescent lamps, gas discharge lamps and other electric light sources.

The first electric light in China appeared on the eighth day of the fourth month of the fifth year of Guangxu in the Qing Dynasty (May 28, 1879), when the Englishman Bi Xiaopu (J. Bi Xiaopu, who was working in the Bureau of the Ministry of Industry of the Shanghai Public Concession at that time d.In a warehouse on Zhapu Road in China, a 10-horsepower (kilowatt) steam engine was used as the power to drive a self-excited DC generator to generate electricity and ignite the carbon arc lamp, thus announcing that the electric lamp was put into use in China.

It is a physical phenomenon that lamps can emit light. When we turn on the switch of the light and turn on the power, the current enters the bulb through the wire. At this time, the slender tungsten wire will work hard to block the advance of the current, and a lot of heat will be generated during the battle between the tungsten wire and the electric current.

When this heat accumulates to a certain limit, it turns from heat to light, and the bulb lights up.

"An electric current is formed when the charge moves in a directional direction".

Electrons are negatively charged. Positrons have been found in experiments, and their lifetimes are unimaginably short, and a large number of positrons have not yet been found to exist stably in nature.

Lightning is a discharge phenomenon, but it is not the result of "positive and negative electrons colliding with each other".

The incandescent lamp (for the sake of simplicity, just tungsten lamp) is lit because the current makes the tungsten filament hot, and when it is very hot, it emits light (electrons collide with atoms, and some outer and sub-outer electrons jump between different energy levels, accompanied by the absorption and release of photons).

The lighting will be on and off due to the problem of poor contact of the line or lamp: If the line or lamp is in poor contact, there will also be a situation where the light will be on and off, and this phenomenon is also very common. The solution to the poor contact of the line or lamp that causes the lamp to turn on and off for a while:

We need to check the wiring of the line and the lamp head, start from the wiring of the lower port of the air switch of the lighting circuit in the distribution box, find the place where the connection is not firm, and reprocess the wiring of the connector.

Lamps:

Lamps and lanterns are a general term for lighting tools, which are divided into chandeliers, table lamps, wall lamps, floor lamps, etc. Refers to the apparatus that can transmit, distribute and change the light distribution of the light source, including all the parts required to fix and protect the light source except the light source, as well as the necessary line accessories for connection with the power supply.

There are many reasons why the lights in your home suddenly turn on on your own. It is possible that the switch on which this light is installed in your home is broken. That is to say, the switch is broken, and it is possible that he directly connected the control line. This causes the lights to come on automatically.

The lights at home are lit by themselves, it is worth noting, there may be a problem, it is an alien visit, and you feel that the lights in your house are interesting and press on, this can be paid attention to, you have to take a look secretly, if you find an alien, you must think about it, then you will fight, you can go to various places to tour, the venue is full, you will count the money every day.

It is recommended to check the line, because maybe there is a bad contact somewhere, this situation is the most likely to occur on the line**, there is a fire hazard, for the sake of safety, or check it.

The light is on by itself, it may be that the contact is not good, and you need to find an electrician to repair it, there are potential safety hazards, don't do anything else.

The light in your house is on its own, which is likely caused by the poor contact of your light switch, find an electrician to repair or replace the switch.

That can be caused by energy-saving lamps or LED lights and improper connection circuits.

First of all, check that the light switch should be on the live wire - test both ends of the switch with a voltage tester, after disconnecting the switch, the end of the light is not on, and the end of the power supply is on - it means that the wire is right, otherwise it will be replaced.

Replace the bulb first, and then confirm if the bulb is good elsewhere If so, the switch is not working.

The light itself is caused by the aging of the switch, and it will be fine to replace the switch with a new one.

One possibility is that the switch is broken, and the other possibility is that the neutral line and the live wire have been out of control for a long time, that is, a bright light is generated.

Don't be nervous. Check it first to see if there is a problem with the wiring or switch, if you don't understand, call a professional electrician to come and check it. Don't act blindly so as not to hurt yourself.

It may be that you accidentally lit it and forgot it, sometimes you don't feel it when you light it up, and you should remember it next time you try to light the lamp