Two Positive Charges (+8

Multiple Choice

Two positive charges (+8.0 mC and +2.0 mC) are separated by 300 m.A third charge is placed at distance r from the +8.0 mC charge in such a way that the resultant electric force on the third charge due to the other two charges is zero.The distance r is

A) 0.25 km
B) 0.20 km
C) 0.15 km
D) 0.13 km
E) 0.10 km