Two plastic drinking straws are vigorously rubbed with a piece of wool. Then they are brought near each other as shown above. What observation con you make?

They attract eachother

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They repel eachother

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nothing will happen

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can't say

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Solution

The correct option is B They repel eachother
Since $2$ individual plastic drinking straw are vigorously rubbed with a piece of wool, both plastic drinking straws acquire the same type of charge and so they repel each other.

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Plastic straws A and B are rubbed with dry cotton cloth. What will happen, if they are brought near each other?

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