Question

The value of q1 and q2 will be 3.0 x 10^-9 C respectively. Because to be at equilibrium, both of the charges must have equal but opposite charge in them is -6 x 10^-9 C. So we will divide this value into equal and opposite types

Answer 1

Yes, you are correct. In order to be in equilibrium, two charges must have equal but opposite charges. So, if the total charge is -6 x 10^-9 C, dividing it into equal and opposite charges would give each charge a value of 3 x 10^-9 C. This is because (-6 x 10^-9 C) / 2 = 3 x 10^-9 C.