Identical Point Charges Q Are Placed at Each of the Four

Multiple Choice

Identical point charges Q are placed at each of the four corners of a 3.0 m × 4.0 m rectangle. If Q = 40 μC, what is the magnitude of the electrostatic force on any one of the charges?

A) 3.0 N
B) 2.4 N
C) 1.8 N
D) 3.7 N
E) 2.0 N