Electrostatic Interaction

Electricity and Magnetism Level 1

When a glass rod is rubbed with a silk cloth, a positive charge is gained by the glass rod. This can be described in terms of the gain or loss of electrons or protons.

Which of the following statements are correct?

Protons are removed from the silk cloth Electrons are removed from the glass rod Protons are added to the glass rod Electrons are removed and protons are also added to the glass rod

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Krishna Ar by Krishna Ar , 21, India

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4 solutions

Discussions for this problem are now closed

Revant Chopra
May 31, 2014

Correct me if I am wrong: The protons are too strongly bound in the nucleus. Any positive or negative charge is the result of the scantiness or excess of electrons in the atom.

26 Helpful 0 Interesting 0 Brilliant 1 Confused

Yeah that's the best answer

ashutosh mahapatra - 7 years ago
Ashish Chhonkar
Jun 2, 2014

In atom, protons are in nucleus and electrons are revolving around them. When any rubbing occur, only electron transfer happens. Protons never break out from nucleus. In this case, glass losses it's electrons and due to this it becomes positive.... Option A

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Satvik Golechha
May 30, 2014

When we say that a positive charge is induced in something, we mean that electrons have moved out of it. A question from my side now....... Why do we consider electrons to be negatively charged??

1 Helpful 0 Interesting 0 Brilliant 0 Confused

its only by convetion, no -ve and +ve like things are there. We come to know that there are 2 types of charges. So, to represent them easily, the best came forward to name them -ve and+ve. Its only convention, But now it is widely and internationally excepted and hence its used everywhere

Jayant Jhamb - 7 years ago

Are you asking why protons are different from electrons, or are you asking why we decided the electrons were negative instead of positive?

I don't know why the protons would be positive and electrons negative; it's just one of those things you have to accept. As for why electrons are negative instead of positive, that's just the way it was decided. Would it have made any difference if people decided electrons were positive and protons were negative? Obviously it wouldn't.

Why they attract? The general rule is that everything wants to maintain equilibrium and have the lowest potential difference. If you open the door to your house during winter time, heat doesn't enter your house to make the difference in temperature greater; heat leaves your house to make the difference in temperature 0. Positive and negative are a lot like hot and cold; they are opposite, and they cancel each other. Positive and negative will be attracted to each other so they can have the smallest difference of charge possible.

Krishna Ar - 7 years ago

Well, my question was- "Why are electrons considered negatively charged?" . And the answer is that it was used by Benjamin Franklin. It could've been the other way round.

Satvik Golechha - 7 years ago

That's exactly what I told. It WAS DECIDED by someone. It wouldn't have made any difference were it the opposite, I have mentioned that too @Satvik Golechha

Krishna Ar - 7 years ago

The reason that, why electron is negatively charged or why it has a charge. It is because of the very fact that, it is its intrinsic property, already inbulit in the electron. As somebody(not human) can ask, why do you have hands or why do you have such a shape(mean to say human body shape i.e. legs, hands etc.). As that, charge is an intrinsic property, the other one is the spin. I am sorry, if I understood your question wrong.

Lavi Upreti - 7 years ago

Well Satvik, it seems you do have a knack of probing deep into everything, don't you? @Satvik Golechha

Shreyansh Vats - 7 years ago

Yes, he does Shreyansh :P

Krishna Ar - 7 years ago

Oh! Do I? No, I don't. @Shreyansh Vats tell me how you did you solve my question 'Fibonacci Function' or I'll...............you know what.

Satvik Golechha - 7 years ago
Oscar Nielsen
Jun 3, 2014

Glass rod electrons excited by silk cloth, which makes the glass rod arising joining the silk cloth and causing a positive charge in the crystal and a negative charge in the silk cloth. Option A.

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