An electromagnetic wave of frequency \[1\times {{10}^{14}}\]hertz is propagating along z-axis. The amplitude of electric field is\[4\text{ }V/m\]. If \[{{\varepsilon }_{0}}=8.8\times {{10}^{-12}}{{C}^{2}}/N-{{m}^{2}},\] then average energy density of electric field will be:

\[35.2\times {{10}^{-13}}J/{{m}^{3}}\]

\[35.2\times {{10}^{-10}}J/{{m}^{3}}\]

\[35.2\times {{10}^{-11}}J/{{m}^{3}}\]

\[35.2\times {{10}^{-12}}J/{{m}^{3}}\]

An electromagnetic wave of frequency \[1\times {{10}^{14}}\]hertz is p

1.	An electromagnetic wave of frequency \[1\times {{10}^{14}}\]hertz is propagating along z-axis. The amplitude of electric field is\[4\text{ }V/m\]. If \[{{\varepsilon }_{0}}=8.8\times {{10}^{-12}}{{C}^{2}}/N-{{m}^{2}},\] then average energy density of electric field will be:
A.	\[35.2\times {{10}^{-10}}J/{{m}^{3}}\]
B.	\[35.2\times {{10}^{-11}}J/{{m}^{3}}\]
C.	\[35.2\times {{10}^{-12}}J/{{m}^{3}}\]
D.	\[35.2\times {{10}^{-13}}J/{{m}^{3}}\]
Answer» D. \[35.2\times {{10}^{-13}}J/{{m}^{3}}\]