Comb gets electrically charged by friction. … But when the comb runs through wet hair no electric charge is produced because friction between hair and comb is reduced. Due to absence of electric charge in comb it cannot polarize small bits of paper. Hence comb cannot attract small bits of paper.
When you run comb through dry hair it attracts bits of paper why what would you expect if the hair is wet or if it is a rainy day?
(a) This is because the comb gets charged by friction. The molecules in the paper gets polarised by the charged comb, resulting in a net force of attraction. If the hair is wet, or if it is rainy day, friction between hair and the comb reduces.
How can you explain a comb run through dry hair attracts pieces of paper?
You can observe static electricity if you run a plastic comb through your hair, then place the comb near small pieces of paper. The paper is attracted to the comb. This happens because the charged comb induces an opposite charge in the paper and as opposite charges attract, the paper sticks to the comb.
Does the same attraction take place when your hair is wet Why Why not?
If the hair is wet, or if it is a rainy day, the friction between the hair and comb reduces. The comb does not get charged and hence it will not attract the bits of paper.
When a plastic object such as a comb is run through dry hair the comb becomes charged and is able to attract tiny bits of paper this is known as which force?
By Definition, Static Electricity is the imbalance of electric charges on the surface or within a material. As we move a plastic comb through dry hair, the plastic comb gets polarized and hence static electricity is generated.
Why is hair attracted to plastic comb during a hot day?
If you comb your hair, for example, electrons leave the atoms and molecules in your hair and travel to the plastic comb. The comb, covered in negatively charged electrons, becomes negatively charged as well, and your hair is left with a positive charge.
What happens to the comb when dry hair is combed?
Answer: When the comb runs through dry hair, it gets charged by friction. … If the hair is wet, or if it is a rainy day, the friction between the hair and comb reduces.
When a comb rubbed with dry hair attracts pieces of paper this is because the comb polarizes the piece of paper?
When a comb rubhed with dry hair attracts pieces of paper. This is because the comb induces a net dipole moment opposite to the direction of field. This happens the field due to charge on comb induces dipole moment in paper by tretching or re-orienting molecules of the dielectric.
Does the attraction between the comb and the piece of papers last for longer period of time?
Does the attraction between the comb and the piece of papers last for longer period of time? No, because the comb loses its net charge after some time. The exess charge of the comb transfers to earth through our body after some time.
When a comb is rubbed on dry hair it can attract pieces of paper without touching them this is due to <UNK>force?
When the charged comb is brought near bits of paper, the electrostatic force of attraction between the atoms of the paper and the comb caused by the electrons on the surface of the comb polarizes them which attracts the pieces of paper towards the comb.
Why does a comb run through dry hair?
When comb runs through dry hair, it attracts small bits of paper. This is because the comb gets charged by friction. Comb gets electrically charged by friction. Due to electric charge, paper gets polarized and it attracts small bits of paper.
Is combing your hair friction?
The comb has become charged by friction, acquiring an excess of electrons. … This leaves a net positive charge on the side close to the comb, and since unlike charges attract, the paper is attracted to the comb.
Why does hair stick together when wet chemistry?
A: The hairs each stick to the water, and the water sticks to itself, because of the electrical attraction between the charged ends of water molecules. So the hairs can’t pull apart without either leaving one dry but they stick to water) or pulling parts of the water apart (but the water sticks to itself).
What happens when a dry metal comb is rubbed through dry hair?
Answer: Explanation: Nothing will happen because metal comb will not charge while rubbing with dry hair as compared to plastic comb.
What happens when a plastic comb is rubbed on dry hair and held near bits of paper?
Plastic comb gets electrically charged due to rubbing & therefore it attracts tiny pieces of paper. A charged body can attract an uncharged body.
What happens when a plastic comb rubbed several times in dry hair is brought near a heap of pieces of paper?
Answer: Within the papers strips, the electrons get either repelled or attracted according to whether the comb has a negative or a positive charge. This makes the paper strips have an unlike charge in the direction of the comb, and makes them rise towards it.