An inflated balloon is rubbed with a woollen cloth and in another case, a ballpen refill is rubbed with polythene. When the balloon and refill are brought closer, it is observed that they attract each other. What can we understand by this?

Both acquired same kind of charge

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They acquired different kinds of charges

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One of the object is not charged

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None of these

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Solution

The correct option is B
They acquired different kinds of charges

When you rub one material to another, they are charged by friction, also like charges repel and unlike charges attract each other. In the above experiment, the balloon has acquired a kind of charge that is opposite to the charge acquired by the ballpen refill. As unlike charges attract each other, the balloon and the refill developed a force of attraction with each other, so they acquired opposite kind of charges.

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Similar questions

An inflated balloon is rubbed with a woollen cloth and in another case, a ballpen refill is rubbed with polythene. When they are brought closer, it is observed that they attract each other. Which of the following conclusions can be made from this?

An inflated rubber balloon is rubbed with a woollen cloth whereas a ballpoint pen refill is rubbed with a polythene bag. Which of these will get positively charged?

A. Inflated rubber balloon B. Woollen cloth C. Ballpoint pen refill D. Polythene bag

(a) A and B (b) B and C (c) A and D (d) B and D

Q. Two inflated balloons are rubbed individually with a woollen cloth. When they are brought closer, they attract one another because they are oppositely charged.

Q. What happens when the Refill is rubbed using polythene or woollen cloth?

Fill the following table.

" $\begin{matrix} O b j e c t s r u b b e d & M a t e r i a l u s e d f o r r u b b i n g & A t t r a c t s / d o e s n o t a t t r a c t p i e c e s o f p a p e r & C h a r g e d / n o t c h a r g e d R e f i l l & p o l y t h e n e, w o o l l e n c l o t h B a l l o o n & p o l y t h e n e, w o o l l e n c l o t h, d r y h a i r E r a s e r & w o o l S t e e l s p o o n & p o l y t h e n e, w o o l e n c l o t h \end{matrix}$ "

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