At distance 'r' from a point charge, the ratio `(U)/(V^(2))` (where 'U' is energy density and 'V' is potential) is best respresented by :

The energy density u/V of an ideal gas is related to its pressure P as

At a certain distance from a point charge, the electric field is 500 V/m and the potential is 3000 V. What is the distance ?

A point P is at a distance r from a point charge q. if at point P, the electric potential is 300 V, and the electric field intensity is 75 V/m, then the distance of P from the point charge is

Plot a graph comparing the variation of potential ‘V’ and electric field ‘E’ due to a point charge ‘Q’ as a function of distance r from point charge (ii) Find the ratio of the potential differences that must be applied across the parallel and the series combination of two identical capacitors so that the energy stored, in the two cases, becomes the same.

Plot the graphs of |(1)/(V)| vs |(1)/(u)| where v is image distance and u is object distance for the conditions given below:

For a concave lens of focal length f, the relation between object and image distance u and v, respectively, from its pole can best be represented by (u = v is the reference line) :

When a spring is compressed by a distance 'x' , the potential energy stored is U_(1) . It is further compressed by a distance '2x' , the increase in potential energy is U_(2) . The ratio of U_(1):U_(2)

The ratio of energy density in electrif field (u_(E)) to square of potential (V^(2)) at a point A at a distnance x from a static point charge Q is eta (a). Write the value of the ratio at a distance 2x from the point charge Q. (b). Write the dimensional formula for the ratio eta

From a point charge, there is a fixed point A. At a, there is an electric field of 500 V/m and potential difference of 3000 V. Distance between point charge and A will be