Two point charges of `+2 muC and + 6 muC` repel each other with a force of 12 N. If each is given additional charge of `-4 muC`, what will be the new force ?

Two points charges of +3muC and +8muC repel each other with a force of 40 N . A charge of -5muC is added to each of them. Now, the force will be

Two point charges of + 20 muC and - 80 muC are placed 18 cm apart. Find the position of the point where electric field is zero

Two points charges q_1 and q_2 are 3 m apart and their combined charge is 20 muC . If one repels the other with a force of 0.075 N, what are the two charges?

Two points charges of +20 muC and + 80 muC are plaed 18 cm apart. Find the position of the point where electric field is zero.

Three point charges of +2muC ,-3muC and -3muC are kept at the vertices A, B and C respectivel of an equilaterla triangle of side 20 cm. What should be the sign and magnitude of the charge to be placed at the mid-point M of side BC, so that the charge at A remains in equilibrium?

Two similar charges repel each other with a force of 44.1 Newton when placed 2cm apart in air. Calculate the strength of charge.