First slide

Electromagnetic waves and its nature

Question

In an electromagnetic wave the electric and magnetizing fields are $100 V / m$ and $0.265 A / m$ . The maximum rate of energy flow is

Moderate

A

$26.5 W m^{- 2}$
B

$36.5 W m^{- 2}$
C

$46.7 W m^{- 2}$
D

$76.5 W m^{- 2}$

Solution

Amplitude of electric field, $E_{0} = 100 V / m$
Amplitude of magnetizing field $H_{0} = 0.265 A / m$
The maximum rate of energy flow is poynting vector
$= \frac{E_{0} B_{0}}{μ} = E_{0} \times H_{0} = 100 \times 0.265 ∴ S = 26.5 W m^{- 2}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App