Why does plastic ruler attract pieces of paper when it is rubbed with dry hair?
Plastic comb gets electrically charged due to rubbing & therefore it attracts tiny pieces of paper. A charged body can attract an uncharged body.
Why does a comb rubbed on hair attract 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.
When a plastic comb is rubbed in dry hair it attracts tiny pieces of paper which force is involved in this process?
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 plastic attract hair?
After being rubbed together, the plastic in the balloon picks up a negative charge, while the person’s hair ends up with a positive charge. … This attraction between oppositely charged objects is what we know as ‘static’.
When you rub the back of a plastic pen in your hair and bring it nearest small piece of paper it attracts paper due to?
when plastic comb is rubbed with dry hair , it acquires charge due to static electricity and so it attracts pieces of paper which is uncharged.
Why do rulers attract small pieces?
When the negatively charged ruler is brought near to the paper pieces, they are attracted to the ruler as the the electrons move around on the paper because of the large charge on the ruler. Electrons will move away from the ruler leaving a positive charge on the paper near the ruler, so they are attracted.
Do like charges attract?
According to Coulomb, the electric force for charges at rest has the following properties: Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges.
Why do combs get electrified?
Plastic comb is poor conductor of electricity so they contain static charges. While rubbing, due to friction,these static charges gain energy and get electrified.
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.
What happens when the plastic comb is rubbed with a piece of cloth?
When a wool cloth is rubbed on a plastic comb, the cloth loses electrons and the comb gains them. The comb now has a negative charge and the wool has a positive charge.
Why must JOSE use a plastic comb rather than a metal comb?
Why? Plastic is an insulator, whereas metals are good conductors of electricity. When a plastic comb is rubbed on our hair, it acquires static charges, which do not move. If we do the same with a metal comb, it will not hold static electricity; the charges move from the comb to our body.