Two small identical spheres having charges `+10 muC and - 90muC` attract each other with a force of F newton . If they are kept in contant and then separated by the same distance, the new force between them is -

If two identical spheres having charge 16 mu C and -8 mu C are kept at certain distance apart , then the force if F. They are touched and again kept at the same distance , the force becomes.

If two identical spheres having charge 16 mu C and -8 mu C are kept at certain distance apart , then the force if F. They are touched and again kept at the same distance , the force becomes.

If two identical spheres having charge 16muC and -8mu C are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance, the force becomes

Two charged balls attract each other with a certain force. If they are allowed to touch and then get separated to the same distance apart, the balls will:

Two identical conducting balls having positive charges q_1 and q_2 are separated by a center to center distance r. If they are made to touch each other and then separated to the same distance, the force between them will be.

Two similar very small conducting spheres having vharges 40 muC and -20 muC are some distance apart. Now they are touched and kept at the same distance. The ratio of the initial to the final force between them is :

Two identical metal sphere have charges +15 mu C and +25 mu C and are separated by a distance . If the spheres are first brought into contact and then separated to the original distance then the ratio of the force between them to the previous force is

Two balls carrying charges of +3muC and -3 muC attract each other with a force F. If charge +3muC is added to both, the force between the balls will be :

Two balls carrying charges + 7 muC and -5 mu C attract each other with a force F. If a charge -2 mu C is added to both, the force between them will be :-

Two identical conducting balls having positive charges q_(1) and q_(2) are separated by a center to center distance r. If any are made to touch each other and then separated to the same distance the force between them will be ……… .