An uncharged pith ball is suspended by a nylon fiber. When a negatively charged rubber rod is brought nearby, without touching it, the pith ball
A) becomes polarized.
B) is repelled by the rod.
C) becomes charged by induction.
D) in unaffected.
E) None of the above choices are correct.

Question

Quizplus · Accepted Answer

The electric field from the negatively charged rod causes the electrons in the pith ball to move slightly away, creating a polarization effect where one side of the pith ball is more positive and the other more negative.

An Uncharged Pith Ball Is Suspended by a Nylon Fiber