In an electromagnetic wave, the electric and magnetising fields are `100 V m^(-1)` and `0.265 Am^(-1)`. The maximum energy flow is

Options

A. `26.5W//m^(2)`
B. `36.5W//m^(2)`
C. `46.7W//m^(2)`
D. `765W//m^(2)`

Answer

A

Explanation

Here, amplitude of electric field, `E_(0)=100V//m`, amplitude of magnetic field, `H_(0)=0.265A//m`. We know that the maximum rate of energy flow,
`S=E_(0)xxH_(0)=100xx0.265=26.5W//m^(2)`