A neutral plastic object is rubbed with cotton and the object acquires positive charge. Which of following is true?

Positively charged strip lost all of its

e^{-}

to cotton during charging process

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The object will be of opposite charged as cotton

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The object gained protons during rubbing process

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None of these

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Solution

The correct option is B The object will be of opposite charged as cotton
Charging by friction in two objects results in opposite charges in two bodies.

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Q. Indicate, giving reasons, if the following statements are true or false.
(a) An object which is positively charged contains only protons and no electrons.
(b) An atom with 11 electrons, 11 protons and 12 neutrons is electrically neutral.
(c) An object that is electrically neutral will contain only neutrons.
(d) Two straws rubbed with silk will attract each other.
(e) A balloon rubbed with wool will repel another one that is not rubbed.
(f) When a glass rod is rubbed with silk and made to touch an electroscope, its leaves diverge as they acquire similar charges from the rod.
(g) An electroscope charged by induction develops the same kind of charge as that of the charging body.
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If an object made of substance A is rubbed with an object made of substance B, then A becomes positively charged and B becomes negatively charged. If, however, an object made of substance A is rubbed against an object made of substance C, then A become negatively charged. What will happen if an object made of substance B is rubbed against an object made of substance C?

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A neutral plastic object is rubbed with cotton and the object acquires positive charge. Which of following is true?

The correct option is B The object will be of opposite charged as cottonCharging by friction in two objects results in opposite charges in two bodies.

The correct option is B The object will be of opposite charged as cotton
Charging by friction in two objects results in opposite charges in two bodies.