A glass marble is rubbe A glass marble is rubbed against a piece of silk. As a r

Question

A glass marble is rubbe A glass marble is rubbed against a piece of silk. As a result the piece of fabric acquires extra electrons. What happens to the glass marble? Check all that apply. The marble has lost the same number of electrons acquired by the piece of silk. The marble has acquired the same number of electrons acquired by the piece of silk. The marble acquires a positive charge and repels the piece of silk. The marble acquires a positive charge and attracts the piece of silk. The marble acquires a negative charge and attracts the piece of silk. The marble acquires a negative charge and repels the piece of silk.

Explanation / Answer

The concept of charges was introduced by the scientist "Benjamin franklin".

We know that charges are not generated but acquire by mutual transfer.Hence whenever a glass marble is rubbed

against a piece of silk,the glass marble lost some electrons due to the electro-positive(Tendency of an

element to loose electrons in it) nature of the glass and the same amount of electrons are transferred to piece of silk.

Due to accumulation of positive charge on the side of silk cloth and negative charge on glass marble,glass marble

attracts piece of silk.

Hence A,D are correct

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