Three point charges `Q_(1), Q_(2) and Q_(3)` in that order are placed equally spaced along a striaght line. `Q_(2) and Q_(3)` are equal in magnitude but opposite is sign. If the net force on `Q_(3)` is zero, the value of `Q_(1)` is

Options

A. `Q_(1) = |Q_(3)|`
B. `Q_(1)= sqrt2 |Q_(3)|`
C. `Q_(1) = 2|Q_(3)|`
D. `Q_(1)= 4 |Q_(3)|`

Answer

D