A) \[2{{E}_{0}}{{a}^{2}}\]
B) \[\sqrt{2}{{E}_{0}}{{a}^{2}}\]
C) \[{{E}_{0}}{{a}^{2}}\]
D) \[\frac{{{E}_{0}}{{a}^{2}}}{\sqrt{2}}\]
Correct Answer: C
Solution :
[c] \[\int_{{}}^{{}}{\vec{E}.\overrightarrow{dA}=\phi }\] \[\Rightarrow \phi ={{E}_{0}}(a\times a\sqrt{2})\cos 45{}^\circ -{{E}_{0}}{{a}^{2}}\]
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