Q14 of 26 Page 134

Give two examples of effects in your daily life which are caused by transfer of charges.

We see many effects in our daily life which are cause due to transfer of charges. Some of them are as follows.

1. When we bring a comb rubbed with our head near small pieces of paper, the comb attracts the pieces of paper. As shown in figure below.



2. A balloon rubbed with woollen cloth attracted by a refill rubbed with polythene sheet.The figure below depicts the same.



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When does a piece of matter have a “charge?”

 13

What happens if two objects having the same charge are brought close to each other? What happens if two objects having different charges are brought close? Can you give an example for this?

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Inflate two balloons and rub both of them with a cloth first and then with different material. Will they attract each other in both cases?

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Which country in the world is frequently effected by earth quakes? Collect the information and photographs on the recent earthquake in Japan.