दो आवेशों `q _(1 )` और `q _(2 )` के बिच लगने वाला कूलॉम बल `F = ( kq _(1)_ q_(2))/(r ^(2))` है इस बल का मान -

The electrostatic force between two point charges q_(1) and q_(2) at separation r is given by F= k. (q_(1)q_(2))/(r^(2)) . The constant k

The electrostatic force between two charges Q_(1) and Q_(2) at separation r is given by F= (K.Q_(1)Q_(2))/(r^(2)) The constant K

The electrostatic force between two charges Q_(1) and Q_(1) separated by a distance r is given by F="k"(Q_(1)Q_(2))/(r^(2)) . The constant k depends on

If Coulomb's law is represented by F=kq_(1)q_(2) r^(n) , then n = ......