A small charged plastic ball is vertically above another charged small ball in a frictionless 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 equilibrium distance between the balls in the test tube would become
A) $\sqrt { 2 }$ d.
B)2d.
C)4d.
D)8d.
E)d/4.

Question

A small charged plastic ball is vertically above another charged small ball in a frictionless 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 equilibrium distance between the balls in the test tube would become 
A) $\sqrt { 2 }$ d. 
B)2d. 
C)4d. 
D)8d. 
E)d/4.

Quizplus · Accepted Answer

The Answer of A small charged plastic ball is vertically above another charged small ball in a frictionless 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 equilibrium distance between the balls in the test tube would become 
A) $\sqrt { 2 }$ d. 
B)2d. 
C)4d. 
D)8d. 
E)d/4.

A Small Charged Plastic Ball Is Vertically Above Another Charged 2\sqrt { 2 }2​

A Small Charged Plastic Ball Is Vertically Above Another Charged $\sqrt { 2 }$