A) \[8\times {{10}^{4}}\]N/C
B) \[7\times {{10}^{4}}\]N/C
C) \[5\times {{10}^{4}}\]N/C
D) \[4\times {{10}^{4}}\]N/C
Correct Answer: B
Solution :
\[E=9\times {{10}^{9}}.\frac{Q}{{{r}^{2}}}\]\[=9\times {{10}^{9}}\times \frac{5\times {{10}^{-6}}}{{{(0.8)}^{2}}}=7\times {{10}^{4}}\,N/C\]You need to login to perform this action.
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