Two point charges `q_(A) = 3 mu C` and `q_(B) = -3 muC` are located 20 cm apart in vaccum (a) what is the electric field at the mid point O of the line AB joining the two charges ? (b) If a negative test charge of magnitude `1.5xx10^(-9) C` is placed at the point, what is the force experienced by the test charge ?

Options

A. `1.2 xx 10^(6)N//C`
B. `5.4 xx 10^(6)N//C`
C. `6.9 xx 10^(6)N//C`
D. `9.9 xx 10^(6)N//C`

Answer

B