An object gains excess negative charge after being rubbed against another object, which is:
Neutral
Negatively charged
Positively charged
Either, a, b or c
Two uncharged objects a and b are rubbed against each other. When object b is placed near a negatively charged object c, the two objects repel each other. Which of these statements is true about object a:
Remains uncharged
Becomes positively charged
Becomes negatively charged
Unpredictable
