The field at a distance r from a long string of charge per unit length λ is
Physics · JEE Main · NTA Exams — Electrostatics
The field at a distance r from a long string of charge per unit length λ is
- \(\frac{\mathrm{k} \lambda}{\mathrm{r}^{2}}\)
- \(\frac{\mathrm{k} \lambda}{\mathrm{r}}\)
- \(\frac{\mathrm{k} \lambda}{2 \mathrm{r}}\)
- \(\frac{2 \mathrm{k} \lambda}{\mathrm{r}}\)
Answer
(D) 2 k r
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