Question 114: EM waves

Question

For an electromagnetic wave travelling in free space, the relation between average energy densities due to electric (U
e
) and magnetic (U
m
) fields is :

Accepted Answer

In EMW, average energy density due to electric field (U
e
) and magnetic field (U
m
) is same.

Answer

U
e
= U
m

Answer

U
e
$$
e$$ U
m

Answer

U
e
< U
m

Answer

U
e
> U
m

EM waves

For an electromagnetic wave travelling in free space, the relation between average energy densities due to electric (U e ) and magnetic (U m ) fields is :

Choose the correct answer: