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The energy density associated with electric field \(\vec{E}\) and magnetic field \(\vec{B}\) of an electromagnetic wave …

Q1

The energy density associated with electric field \(\vec{E}\) and magnetic field \(\vec{B}\) of an electromagnetic wave in free space is given by ( \(\epsilon_0\) - permittivity of free space, \(\mu_0\) - permeability of free space)

[JEE Main 2023, 6 Apr (Shift 2)]

a

\(U_E=\frac{E^2}{2 \epsilon_0}, U_B=\frac{\mu_0 B^2}{2}\)

b

\(U_E=\frac{\epsilon_0 E^2}{2}, U_B=\frac{\mu_0 B^2}{2}\)

c

\(U_E=\frac{E^2}{2 \epsilon_0}, U_B=\frac{ B^2}{2\mu_0}\)

d

\(U_E=\frac{\epsilon_0E^2}{2 }, U_B=\frac{ B^2}{2\mu_0}\)

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