The charge on two identical metallic balls are +40`mu`C and -10`mu`C and they are separated at 2.0m. How much and nature of force will act between them?

The radii of two metallic spheres are 5 cm and 10 cm and both carry equal charge of 75 mu C . If the two spheres are shorted then charge will be transferred-

Two identical metals balls with charges +2Q and -Q are separated by some distance and exert a force F on each other . They are joined by a conducting wire , which is then removed. The force between them will now be

Two identical conducting spheres A and B, carry equal charge. They are separated by a distance much larger than their diameters, and the force between them is F. A third identical conducting spheres, C,is uncharged. Sphere C is first touched to A, then to B, and then removed. As a result, the force between A and B would be equal to :

Two point charges q_(1)=2xx10^(-3) C and q_(2)=-3xx10^(-6) C are separated by a distance x = 10 cm. Find the magnitude and nature of the force between the two charges.

Two small identical conducting balls A and B of charges +10 mu C and +30 mu C respectively, are kept at a separation of 50 cm. these balls have been connected by a wire for a short time The final charge on each of the balls A and B and force of interaction will be

Two small identical conducting balls A and B of charges +10 mu C and +30 mu C respectively, are kept at a sepration of 50 cm. these balls have beeen connected by a wire for a short time The final charge on each of the balls A and B will be

Two identical conducting balls A and B have charges- Q and + 3Q respectively. They are brought in contact with each other and then separated by a distance d part. Find the nature of the Coulomb force between them.

There are two charges +1 mu C and -5 mu C under mutual coulombic interaction . The ratio of magnitude of forces acting on themwill be

Two charges 5mu C and 4mu C are separated by a distanc 20 cm in air. Work to be done to decrease the distance to 10 cm is

The force between two charges 4C and -2C which are separated by a distance of 3km is