In the figure below, the electric field at point P is directed upward along the
ID: 1621885 • Letter: I
Question
In the figure below, the electric field at point P is directed upward along the y-axis. If a negative charge -Q is added at a point on the positive y-axis, what happens to the field at P? (All of the charges are fixed in position) (a) Nothing since -Q is on the y-axis. (b) Strength will increase because -Q is negative. (c) Strength will decrease and direction may change because of the interactions between -Q and the two negative q's. (d) Strength will increase and direction may change because of the interactions between -Q and the two negative q's. (e) Cannot determine without knowing the forces -Q exerts on the two negate q's.Explanation / Answer
Ans will be B
since intitially net electric field is along y axis and adding negative charge only increase the magnitude as the direction due to this negative charge is also y axis is same as before