The ratio of energy density in electric field `(U_(E))` to square of potential `(V^(2))` at point 'A' at a distance 'x' from static point charge `Q` is 'n'.The value of this ratio at a distance '3x`from the charge is..?

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

A point charge q is kept at e distance x from the centre of a neutral metallic cube.

" Electric field intensity due to a point charge " "q" ' at a distance 'r' from it is "

Potential at a point due to a point charge is V. The charge is doubled and also the distance of the point from the charge is doubled. The new potential is

The work done in bringing a unit positive charge from infinite distance to a point at distance x from a positive charge Q is W. Then the potential phi at that point is

find the electric field strength due to a point charge of 5 muC at a distance of 80 cm from the charge.