A) \[o.2N{{C}^{-1}}{{m}^{2}}\]
B) \[o.1N{{C}^{-1}}{{m}^{2}}\]
C) \[o.3N{{C}^{-1}}{{m}^{2}}\]
D) \[o.01N{{C}^{-1}}{{m}^{2}}\]
Correct Answer: C
Solution :
Electric flux, \[\phi =E.A\] \[\phi =\frac{1}{4\pi {{\varepsilon }_{0}}}\times \frac{q}{{{r}^{2}}}.4\pi {{r}^{2}}=\frac{4\pi p}{4\pi {{\varepsilon }_{0}}}\] \[=9\times {{10}^{9}}\times 8.85\times {{10}^{-13}}\times 4\times \frac{22}{7}\] \[=0.1\,N{{C}^{-1}}{{m}^{2}}\]
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