Question 19 of 165
The unit of is :
(I = intensity of an electromagnetic wave, speed of light)
Show answer and solution
Answer: (D)
$\begin{aligned}
& \mathrm{I}=\frac{1}{2} \epsilon_0 \mathrm{E}_0^2 \times \mathrm{C} \\
& \mathrm{E}_0=\sqrt{\frac{2 \mathrm{I}}{\epsilon_0 \mathrm{C}}}
\end{aligned}$
: electric field N/C
& \mathrm{I}=\frac{1}{2} \epsilon_0 \mathrm{E}_0^2 \times \mathrm{C} \\
& \mathrm{E}_0=\sqrt{\frac{2 \mathrm{I}}{\epsilon_0 \mathrm{C}}}
\end{aligned}$
: electric field N/C