Question

Two inflated balloons are rubbed with a woolen cloth and are brought close to each other. If they repel each other it means that the nature of charge on one balloon is different from the other.

Answer 1

Many physics students are taken aback by the answer. With a neutral object, any charged object, whether positively or negatively charged, will have an attractive interaction. Positively charged and neutral things are attracted to one another, while negatively charged and neutral objects are attracted to one another. When undertaking any of these activities, it's vital to keep in mind the weather: high humidity might make it harder to build up charges, prompting experiments to react in unexpected ways! Clear, sunny, and chilly weather is ideal for “static” weather.

Complete step-by-step solution:
We understand that there are two types of charges: positive and negative. Each charge, no matter how little, creates an electric field. Positive charges produce electric field lines that always come out of the charge, whereas negative charges produce electric field lines that always go into the charge. Furthermore, because the electric field is generated by a positive charge, the field will be directed outward and will repel the unit charge. The fact that like charges repel one another and unlike charges attract each other is a scientific truth. When we try to bring like-charged particles together, they repel each other.
If the two balloons repel each other, it signifies they have the same type of charge, which attracts each other as we all know.

Note: A positive charge is also gained by rubbing a plastic rod with a silk cloth. If we have bits of paper on a table, the plastic will attract the paper. Because of the polarisation of charge in the paper, the negative charges in the paper are drawn to the rod's side, demonstrating the attraction of unlike charges.