The electrostatic force of interaction between an uniformly charged rod having total charge $Q$ and length $L$ and a point charge $q$ as shown in figure is
The electrostatic force of interaction between an uniformly charged rod having total charge $Q$ and length $L$ and a point charge $q$ as shown in figure is
- A
$\frac{1}{{4\pi { \in _0}}}\frac{{qQ}}{{d(d + L)}}$
- B
$\frac{1}{{4\pi { \in _0}}}\frac{4{qQ}}{{(2d + L)^2}}$
- C
$\frac{1}{{4\pi { \in _0}}}\frac{{Qq}}{{d^2}}$
- D
$\frac{1}{{4\pi { \in _0}}}\frac{{qQ}}{{{{(d + L)}^2}}}$
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- [AIEEE 2009]
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