A charge $Q$ is distributed over a line of length $L.$ Another point charge $q$ is placed at a distance $r$ from the centre of the line distribution. Then the force expericed by $q$ is
A charge $Q$ is distributed over a line of length $L.$ Another point charge $q$ is placed at a distance $r$ from the centre of the line distribution. Then the force expericed by $q$ is
- A
$\frac{{qQ}}{{4\pi { \in _0}({r^2} - {L^2})}}$
- B
$\frac{{qQ}}{{4\pi { \in _0}({r^2} - {{(L/2)}^2})}}$
- C
$\frac{{qQ}}{{4\pi { \in _0}{r^2}}}$
- D
$\frac{{qQL}}{{4\pi { \in _0}{r^3}}}$
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