Two electrically charged particles, having charges of different magnitudes, when placed at a distance from each other, experience a force of attraction .F. These two particles are put in contact and again placed at the same distance from each other. What is the nature of new force between them?

Two small conducting spheres of equal radius have charges + 10 muC and -20 muC respectively and placed at a distance R from each other. They experience force F_(1) . If they are brought in contact and separated to the same distance, they experience force F_(2) . The ratio of F_(1) to F_(2) is

Find the force of interaction of two dipoles , if the two dipole moments are parallel to each other and placed at a distance x apart

Two particle of equal mass m and charge q are placed at a distance of 16 cm. They do not experience any force. The value of (q)/(m) is

Two charged particles are placed at a distance 1.0 cm apart. What is the minimum possible magnitude of the electric force acting o each charge?

Two charged particles are placed at a distance 1.0 cm apart. What is the minimum possible magnitude of the electric force acting o each charge?

Two identical balls having like charges and placed at a certain distance apart repel each other with a certain force. They are brought in contact and then moved apart to a distance equal to half their initial separation. The force of repulsion between them increases 4.5 times in comparision with the initial value. The ratio of the initial charges of the balls is

The force between two similar charges of magnitude 2C each separated by a distance 2km

Two point charge Q and 4Q are fixed at a distance of 12cm from each other. Sketch lines of force and locate the neutral point, if any .

Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is

Two particles having charge Q_(1) and Q_(2) , when kept at a certain distance exert a force F on each other . If the distance between the two particles is reduced to half and the charge on each particle is doubled , the force between the particles would be