A) \[-4\times {{10}^{3}}\] coulomb
B) \[4\times {{10}^{3}}\] coulomb
C) \[\frac{-4\times {{10}^{3}}}{{{\varepsilon }_{0}}}\] coulomb
D) \[-4\times {{10}^{3}}{{\varepsilon }_{0}}\]coulomb
Correct Answer: D
Solution :
The charge inside the closed surface is given by \[q=\] net electric flux pass through the surface \[\times \,{{\varepsilon }_{0}}\] \[q=(4\times {{10}^{3}}-8\times {{10}^{3}}){{\varepsilon }_{0}}\] Therefore, \[q=-4\times {{10}^{3}}{{\varepsilon }_{0}}\] coulomb
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