Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

During the propagation of electromagnetic waves in a medium : 

Options:

Electrical energy density is equal to the magnetic energy density.

Both electric and magnetic energy densities are zero.

Electric energy density is double of the magnetic energy density.

Electric energy density is half of the magnetic energy density.

Correct Answer:

Electrical energy density is equal to the magnetic energy density.

Explanation:

Electrical energy density is equal to the magnetic energy density.

uE = uB

\(\frac{1}{2}E^{2} \epsilon_{o}\) = \(\frac{1}{2}\) \(\frac{B^{2}}{\mu_{o}}\)