Two Small Objects Are Suspended from Threads

question 14

Multiple Choice

Two small objects are suspended from threads.When the objects are moved close together,they attract one another.Which of the following could produce this result?

• A)One object is positively charged and the other is negatively charge.
• B)One object is positively charged and the other is uncharged.
• C)One object is negatively charged and the other is uncharged.
• D)All of the above could result in such attraction.