A point charge $q$ is situated at a distance $d$ from one end of a thin non - conducting rod of length $L$ having a charge $Q$ (uniformly distributed along its length) as shown in fig.Then the magnitude of electric force between them is
A point charge $q$ is situated at a distance $d$ from one end of a thin non - conducting rod of length $L$ having a charge $Q$ (uniformly distributed along its length) as shown in fig.Then the magnitude of electric force between them is
- A
$\frac{1}{{4\pi \,{ \in _0}}}\frac{{qQ}}{{2d\left( {d + L} \right)}}$
- B
$\frac{1}{{4\pi \,{ \in _0}}}\frac{{2qQ}}{{d\left( {d + L} \right)}}$
- C
$\frac{1}{{4\pi \,{ \in _0}}}\frac{{qQ}}{{3d\left( {d + L} \right)}}$
- D
$\frac{1}{{4\pi \,{ \in _0}}}\frac{{qQ}}{{d\left( {d + L} \right)}}$
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