Question

A glass marble is rubbed against a piece of silk. As a resultthe piece of fabric acquires extra electrons.

What happens to theglass marble?

a)The marble has lost the same number ofelectrons acquired by the piece of silk.

b)The marble acquires a positive charge andrepels the piece of silk.

c)The marble acquires a negative charge andattracts the piece of silk.

d)The marble has acquired the same numberof electrons acquired by the piece of silk.

e)The marble acquires a positive charge andattracts the piece of silk.

f)The marble acquires a negative charge andrepels the piece of silk.

Answer 1

the marble has lost the same number of electrons acquired by the piece of silk.

the marble acquires a positive charge and attracts the piece of silk.

Step-by-step explanation:

When an object or a material acquires extra electrons it becomes negatively charged while when it losses electrons it becomes positively charged. The glass marble was rubbed against the silk cloth, and the silk cloth acquires extra electron thereby becoming negatively charged, the same amount of charge the silk cloth acquires was lost from the glass marble thereby causing the marble to become positively charged. Also opposite charges attracts while likes charges repel and due to equal and opposite charge on silk and glass marble, they both will attract each other. thus option A and E is correct.