A Point Charge (−5

Multiple Choice

A point charge (−5.0 μC) is placed on the x axis at x = 4.0 cm, and a second charge (+5.0 μC) is placed on the x axis at x = −4.0 cm. What is the magnitude of the electric force on a third charge (+2.5 μC) placed on the y axis at y = 3.0 cm?

A) 90 N
B) 45 N
C) 54 N
D) 72 N
E) 36 N