A 30 μC Point Charge and a 9

Multiple Choice

A 3.0 μC point charge and a 9.0 μC point charge are initially infinitely far apart.How much work does it take to bring the 3.0 μC point charge to x = 3.0 mm,y = 0.0 mm,and the 9.0 μC point charge to x = -3.0 mm,y = 0.0 mm? (The value of k is 9.0  10⁹ N·m²/C². )

A) 41 J
B) 81 J
C) 27 J
D) 6.8 J