Two point charges whose magnitudes are in the ratio `3 : 2` repel each other with a force `135 xx 10^14` N when they are 4 cm apart in air. Find the magnitude of each charge.

Two point charges, each of 4 mu C when placed in vacuum, repel each other with a force of 1.6 Newton. Calculate the distance between the two charges.

Two point charges of 2 coulomb and 6 coulomb repel each other with a force of 12 newton. If each charge is given an additional charge of -2 coulomb then the force between them will become

(i)Two small spheres 18 cm apart have equal negative charges and repel each other with the force of 6 xx 10^-8 N. Find the total charge on both spheres

Two point charges +3 muC and +8 muC repel each other with a force of 40 N. if a charge of -5 is added to each of them, then the force between them will become

Two positive charges of same magnitude are kept 20 cm apart. A point between the charges will have zero intensity is at

Two charges q_1 and q_2 repel each other with a force of 0.1 N . What will be the force exerted by q_1 on q_2 , when a third charge is placed near them?

Two point charges of + 5 mu C are so placed that they experience a force of 8 xx 10^-3 N. They are then moved apart, so that the force is now 2 xx 10^-3 N. The distance between them is now

Two point charges repel each other with a force of 100 N. one of the charges is increased by 10% andother is reduced by 10% . The new force of repulsion at the same distance would be

Two equally charged, identical metal spheres A and B rpepel each other with a force F. the spheres are kept fixed with a distance r between them. A third identical, but uncharged sphere C is brought in contact with A and then placed at the mid-point of thr line joining A and B. the magnitude of the net electric force on C is