Two point charges `q_(1)=2xx10^(-3) C` and `q_(2)=-3xx10^(-6) C` are separated by a distance `x = 10` cm. Find the magnitude and nature of the force between the two charges.

Options

A. `2 xx 10^(-3)`N
B. `6 xx 10^(-3)`N
C. `5 xx 10^(-3)`N
D. `1 xx 10^(-3)`N

Answer

B

Explanation

`therefore` Electrostatic force, F = `k(Q_(1)Q_(2))/r^(2)`
`=9 xx 10^(9) xx (2 xx 10^(-7)xx 3 xx 10^(-7))/(30 xx 10^(-2))^(2)`
`=6 xx 10^(-3)N`