When a glass rod is rubbed with a piece of silk cloth, then:
A. the glass rod and silk cloth both acquire positive charge.
B. the glass rod becomes positively charged while the silk cloth has a negative charge.
C. the glass rod and silk cloth both acquire negative charge.
D. the glass rod becomes negatively charged while the silk cloth has a positive charge.
Answer:B
When a glass rod is rubbed with a piece of silk cloth, then:
A. the glass rod and silk cloth both acquire positive charge. B. the glass rod becomes positively charged while the silk cloth has a negative charge. C. the glass rod and silk cloth both acquire negative charge. D. the glass rod becomes negatively charged while the silk cloth has a positive charge.