Static, a form of magnetism
On a humid day, the moisture in the air can create a layer of water on the surface of the paper, preventing the plastic comb from effectively accumulating and transferring its charge to the paper. This interferes with the ability of the comb to attract the neutral pieces of paper.
You can rub the plastic rod with a piece of cloth and then try to attract small pieces of paper such as tissue paper or small paper bits. Repeat this process multiple times. If the plastic rod has gained or lost charge, its ability to attract the paper will change, indicating a change in the rod.
The reason why the pieces of paper are neutral is that they contain equal amount of positive and negative charges and so they cancel each other out. When you bring a charged plastic comb to the pieces of paper, the charge opposite to that of the plastic comb will be brought to a part of the surface of the paper where the plastic comb is. Opposite charges attract each other, and since you're holding the comb, the pieces of paper will be attracted to the comb.
Nope, this does not contradict coulomb's law. The reason why the pieces of paper are neutral is that they contain equal amount of positive and negative charges and so they cancel each other out. When you bring a charged plastic comb to the pieces of paper, the charge opposite to that of the plastic comb will be brought to a part of the surface of the paper where the plastic comb is. Opposite charges attract each other, and since you're holding the comb, the pieces of paper will be attracted to the comb.
the teeth catch the paper
when you rub the plastic ruler on e.g. a yellow duster it takes the electrons (which is the negative charge) from the yellow duster and the plastic ruler becomes negatively charged. The paper has both protons and electrons the protons are positively charged. and very much like a magnet the negative is attracted to the positive hence the paper sticks to the ruler Hastings Tarrant
An iron comb does not attract pieces of paper because iron is not a material that is naturally magnetic. In order to attract pieces of paper, the comb would need to be made of a magnetic material such as iron that has been magnetized.
Yes, when a plastic ruler is rubbed with oily hair, it can become statically charged. This static charge may attract lightweight objects like pieces of paper due to the electrostatic force between the ruler and the paper.
No, rubbing a steel spoon with polythene and woolen cloth will create static electricity on the surface of the spoon, causing it to attract pieces of paper.
put it in the water and it can be attracted to anything
When a comb is brought near pieces of paper, the comb might attract small bits of paper due to static electricity. This occurs because rubbing the comb against hair or fabric creates a charge imbalance on the comb, causing it to become temporarily charged and attract light objects like pieces of paper.
The tip of a ball pen is plastic. When plastic is rubbed in a person's hair it attracts light objects due to static electricity. It can be any plastic that will create the static electricity. Even an inflated balloon will do this trick.