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Question
Question 2
When a glass rod is rubbed with a piece of silk cloth the rod :
a) both glass rod and the cloth both acquire positive charge.
b) glass rod becomes positively charged while the cloth has a negative charge.
c) both glass rod and the cloth both acquire negative charge.
d)glass rod becomes negatively charged while the cloth has a positive charge.
Question 2
When a glass rod is rubbed with a piece of silk cloth the rod :
a) both glass rod and the cloth both acquire positive charge.
b) glass rod becomes positively charged while the cloth has a negative charge.
c) both glass rod and the cloth both acquire negative charge.
d)glass rod becomes negatively charged while the cloth has a positive charge.
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Solution
Option (b)
The glass rod becomes positively charged, while the cloth will have a negative charge. Glass happens to lose electrons easily, and silk grabs them away from the glass atoms, so after rubbing the glass becomes positively charged and the silk becomes negatively charged.
Option (b)
The glass rod becomes positively charged, while the cloth will have a negative charge. Glass happens to lose electrons easily, and silk grabs them away from the glass atoms, so after rubbing the glass becomes positively charged and the silk becomes negatively charged.
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