The electric field shown is produced by a single point charge at the center of the picture.
-If a new negative point charge is placed at location B directly above the one pictured,the force on it will
A)be zero.
B)push it upward.
C)push it downward.
D)be in an unknown direction.

Question

The electric field shown is produced by a single point charge at the center of the picture. 
-If a new negative point charge is placed at location B directly above the one pictured,the force on it will
A)be zero. 
B)push it upward. 
C)push it downward. 
D)be in an unknown direction.

Quizplus · Accepted Answer

Since there is only one point charge at the center, the direction of the electric field lines is radially outward from the center. If a new negative point charge is placed at location B directly above the one pictured, it will experience an electric force in the downward direction due to the repulsion between the negative charges. Therefore, the correct choice is C.

The Electric Field Shown Is Produced by a Single Point