A point charge of +Q is placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2 N acts on the positive charge at the center.

What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?
A) 2 N
B) 2/ N
C) zero
D) 4 N

Question

A point charge of +Q is placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2 N acts on the positive charge at the center.
 
 What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?
A) 2 N 
B) 2/ N 
C) zero 
D) 4 N

Quizplus · Accepted Answer

The Answer of A point charge of +Q is placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2 N acts on the positive charge at the center.
 
 What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?
A) 2 N 
B) 2/ N 
C) zero 
D) 4 N

A Point Charge of +Q Is Placed at the Center