[Solved] Three Pith Balls Supported by Insulating Threads Hang from a Support

Question 25
Multiple Choice

Three pith balls supported by insulating threads hang from a support. We know that ball X is positively charged. When ball X is brought near balls Y and Z without touching them, it attracts Y and repels Z. Since pith is an insulating material, we can conclude that

A)Y has a negative charge.
B)Z has a negative charge.
C)Y has a positive charge.
D)Z has a positive charge.
E)Z is neutral (has no net charge).

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