One Very Small Uniformly Charged Plastic Ball Is Located Directly

question 31

Multiple Choice

One very small uniformly charged plastic ball is located directly above another such charge in a test tube as shown in the figure. The balls are in equilibrium a distance d apart. If the charge on each ball is doubled, the distance between the balls in the test tube would become

• A) d.
• B) 2d.
• C) 4d.
• D) 8d.