A) \[\frac{Q}{{{\pi }^{2}}{{\varepsilon }_{0}}{{r}^{2}}}\]
B) \[\frac{2Q}{{{\pi }^{2}}{{\varepsilon }_{0}}{{r}^{2}}}\]
C) \[\frac{4Q}{{{\pi }^{2}}{{\varepsilon }_{0}}{{r}^{2}}}\]
D) \[\frac{Q}{4{{\pi }^{2}}{{\varepsilon }_{0}}{{r}^{2}}}\]
Correct Answer: A
Solution :
[a] Take PO as the x-axis and PA as the y-axis, Consider two elements EF and E?F? of width \[d\theta \]at angular distance \[\theta \] above and below PO, respectively. The magnitude of the fields at P due to either element isYou need to login to perform this action.
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