A) \[13.29\times {{10}^{-12}}\]
B) \[8.85\times {{10}^{-12}}\]
C) \[17.72\times {{10}^{-12}}\]
D) \[4.43\times {{10}^{-12}}\]
Correct Answer: B
Solution :
Average energy density of magnetic field U is equal to Average energy density of electric field \[=\frac{1}{2}\,\times \frac{1}{2}\,{{\varepsilon }_{0}}{{E}^{2}}\] \[=\frac{1}{2}\,\times \frac{1}{2}\,\times 8.85\,\times {{10}^{-12}}\,\times {{(2)}^{2}}\] \[=8.85\,\times {{10}^{-12}}\]
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