Two positive point charges are `3 m` apart their combined charge is `20 mu C`. If the force between them is `0.075 N`, the charges are

It two charges of 1 coulomb each are placed 1 km apart,then the force between them will be

Two positive point charges of 12 mu C and 8 mu C are 10 cm apart. The work done in bringing then 4 cm closer is

Two similar point charges q_1 and q_2 are placed at a distance r apart in the air. The force between them is F_1 . A dielectric slab of thickness t(ltr) and dielectric constant K is placed between the charges . Then the force between the same charge . Then the fore between the same charges is F_2 . The ratio is

If two charges of 1 coulomb each are placed 1 km apart, then the force between them will be

Two charges each equal to 2mu C are o.5 m apart. If both of them exist inside vacuum, then the force between them is

Two point sized charged bodies repel each other with a force of 20 N when 30 cm apart in air. If their combined charge is 30 muC , find the charge present on each body.

The force between two point charges in air is 100 N. If the distance between them is increased by 50%, then the force between two charges will be nearly equal to