Question

two balls are placed near one another and hang down, as shown below. which conclusion is supported by this evidence? neither ball has a charge. the balls are both positively charged. one ball is positively charged, and the other is negatively charged. each ball has a charge, but the type of charge is unknown.

Explanation:

• If neither ball has a charge, there would be no electrostatic force between them, and they would just hang down as shown.
• If the balls were both positively charged (or both negatively charged), they would repel each other.
• If one ball was positively charged and the other was negatively charged, they would attract each other.

Answer:

Neither ball has a charge.