A point charge of +Q is placed at the centroid of an equilateral triangle, as shown in Figure 15-1. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4 N acts on it.

What is the magnitude of the force that acts on the center charge when a third charge of +Q is placed at one of the other vertices?
A) zero
B) 8 N
C) 16 N
D) 4 N

Question

A point charge of +Q is placed at the centroid of an equilateral triangle, as shown in Figure 15-1. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4 N acts on it.

What is the magnitude of the force that acts on the center charge when a third charge of +Q is placed at one of the other vertices?
A) zero 
B) 8 N 
C) 16 N 
D) 4 N

Quizplus · Accepted Answer

The Answer of A point charge of +Q is placed at the centroid of an equilateral triangle, as shown in Figure 15-1. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4 N acts on it.

What is the magnitude of the force that acts on the center charge when a third charge of +Q is placed at one of the other vertices?
A) zero 
B) 8 N 
C) 16 N 
D) 4 N

A Point Charge of +Q Is Placed at the Centroid