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 charged by induction.
B)becomes polarized.
C)is repelled by the rod.
D)is unaffected.
E)None of the above choices are correct.

Question

Quizplus · Accepted Answer

The negatively charged rod causes the electrons in the pith ball to move slightly away, creating a positive charge on the side of the pith ball closest to the rod, thus polarizing it.

An Uncharged Pith Ball Is Suspended by a Nylon Fiber