Why can static electricity absorb paper?

Due to the phenomenon of "electrostatic adsorption", static electricity can adsorb paper.

The negatively charged glass rod is close to a piece of uncharged paper, and the side of the paper close to the glass rod will induce a positive charge (the other side will induce a negative charge); Then the negative charge of the glass rod and the positive charge in the small piece of paper attract each other, resulting in the phenomenon of "electrostatic adsorption".

Similarly, when an object with static electricity approaches another object without static electricity, due to electrostatic induction, one side of the object without static electricity near the charged object will gather charges with opposite polarity (the other side will generate the same amount of charges with the same polarity), and due to the attraction of opposite charges, it will show the phenomenon of "electrostatic adsorption".

Extended data:

The way of static electricity generation

1 friction

In daily life, any two objects made of different materials will generate static electricity after contact and separation, and the most common method to generate static electricity is friction electrification. The better the insulation of the material, the easier it is to use triboelectric. In addition, any two objects with different substances can be separated after contact, which can also produce static electricity;

2. Induction

For conductive materials, because electrons can flow freely on their surfaces, if they are placed in an electric field, positive and negative ions will transfer, because like charges repel and opposite charges attract.

Step 3 conduct

For conductive materials, because electrons can flow freely on their surfaces, for example, when they come into contact with charged objects, charge transfer will occur.

Baidu encyclopedia-electrostatic adsorption

Baidu encyclopedia-electrostatic induction