How a charged plastic comb can attract neutral pieces of paper does it contradict Coulomb’s law?

The side of the paper facing the comb is always opposite the charge on the comb and therefore feels and attractive force. This does not contradict Coulomb’s law.

Why does paper being neutral is still attracted by charged plastic scale?

6 Answers. This is because the neutrality of polarity can be changed by electric field in this case. When you create – charge in the comb and you expose the pieces of paper to the electric field created by the charge, you will polarise them so that the part closer to the comb will be + and the other will be -.

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What will happen when a plastic comb is charged?

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. … Now you have extra electrons.

Why the pieces of paper initially attracted by charged comb fly away when they touch it?

SOLUTION: The paper is initially attracted to the comb because the comb causes separation of charge in the paper. The part of the paper pieces with positive charge is attracted to the comb. When the paper touches the comb, some of the excess negative charge in the comb is transferred to the paper.

What happens when the plastic comb is rubbed with a piece of cloth?

Because the plastic comb now has all these extra electrons stuck to it, it has an excess of negative electric charge. … When these materials are rubbed together, it is more likely that some of the electrons in the Perspex rod will be rubbed off by the atoms in the cotton cloth.

How does plastic comb attract 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.

How do you charge a plastic comb?

If you hold a plastic comb in your hand and rub it in your hair, it will get charged. However, if you do the same with a metal comb it will not get charged. Why? But if the metal comb has a plastic handle and you hold it from the handle, it will also get charged.

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Why do charged and neutral objects attract?

A positive charge and a negative charge will attract each other. A neutral object will attract both a positive and a negative charge. This is because in some objects, electrons are free to move and transform the charge from positive to negative. These attractive and repulsive forces are exactly that, forces.

Why does a charged rod attracts paper?

H5UUvely Chusu If we take a positively charged glass rod near small pieces of paper, the rod attracts the pieces. … This is because the positively charged rod attracts the electrons of a paper piece towards itself. Some of the electrons accumulate at that edge of the paper piece which is closer to the rod.

Why does a plastic comb rubbed with dry hair attracts tiny pieces of paper class 8?

When a plastic comb is dry hair, it becomes negatively charged. The negatively charged comb induces a positive charge on the pieces of paper which are neutral in nature. As we know that the unlike charges attract each other, plastic comb attracts tiny pieces of paper.

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.

Why does a nylon or plastic comb gets electrified on combing or rubbing but a metal spoon does not?

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. Whereas metal do not contain static charges as they are good conductors of electricity.

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How will you charge a plastic comb plastic scale or plastic pen by the method of friction?

29. How will you charge a plastic comb (plastic scale or plastic pen) by the method of friction? Solution: A plastic comb can be charged by rubbing.

What is charging by rubbing?

Charging by friction: the transfer of electrons from one uncharged object to. another by rubbing the two objects together. Some electrons can move to the. other object when rubbing (hair and balloon) Charging by conduction: the transfer of electrons from one object to another by.

When a plastic comb is rubbed with dry hair?

A plastic comb when rubbed with dry hair gets charged. This is because the electrons present in our hair particles move to the comb and the comb has excessive negative charge which means that the comb has net negative charge.