Plot a graph showing the variation of coulomb force (F) versus `((1)/(r^(2)))`, where r is the distance between the two charges of each pair of charges:
`(1mu C,2mu C) and (2muC-3muC)`. Interpet the graphs obtained.

Plot a graph showing variation of de-broglie wavelength lambda versus 1//sqrtV , where V is accelerating potential for two particle A and P carrying same charge but of masses m_1 and m_2(m_1gtm_2) . Which one of the two represents a particle of smaller mass and why?

The distance between the two charges 25 mu C and 36 muC is 11 cm . At what point on the line joining the two, the intensity will be zero

The force of attractions between two charges 8muC and -4muC is 0.2 N. Find the distance of separation.

(a) Use Gauss's law to show that due to a uniformly charged spherical shell of radius R, the electric field at any point situated outside the shell at a distance r from its centre is equal to the electric field at the same point, when the entire charge on the shell were concentrated at its centre. Also plot the graph showing the variation of electric field with r, for r le R and r ge R . (b) Two point charges of +1 muC and +4 muC are kept 30 cm apart. How far from the +1muC charge on the line joining the two charges, will the net electric field be zero ?

The force between two charges 9 mu C and 1mu c separated by a distance 3 m in space is..........

Two point charges +5mu C and -2mu C are kept at a distance of 1m in free space. The distance between the two zero potential points on the line joining the charges is