Poynting vector and fields

Electricity and Magnetism Level 1

What is the equation of the electric field component of an electromagnetic wave with magnetic field component

B ⃗ = B m z ^ sin ⁡ ( k y + ω t ) ? \vec{B} = B_m\hat{z} \sin(ky + \omega t)?

E ⃗ = B m c x ^ sin ⁡ ( k y + ω t ) \vec{E} = \frac{B_m}{c}\hat{x} \sin(ky + \omega t) E ⃗ = c B m x ^ sin ⁡ ( k y + ω t ) \vec{E} = c B_m\hat{x} \sin(ky + \omega t) E ⃗ = c B m z ^ sin ⁡ ( k y + ω t ) \vec{E} = c B_m\hat{z} \sin(ky + \omega t) E ⃗ = B m c z ^ sin ⁡ ( k y + ω t ) \vec{E} = \frac{B_m}{c}\hat{z} \sin(ky + \omega t)

July Thomas by July Thomas , 30, USA

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

July Thomas
Jun 9, 2016

The equation c = E B c = \frac{E}{B} means E m = c B m E_m = cB_m should be the amplitude of the electric field equation.

The argument of the sine function is k y + ω t , ky+\omega t, which indicates the wave propagates in the y-direction. The z ^ \hat{z} in the magnetic field equation means the magnetic field is oriented parallel tot he z-axis. This leaves only the z-direction for the electric field.

7 Helpful 0 Interesting 0 Brilliant 4 Confused

Sorry that's wrong

Raj Raj - 2 years, 4 months ago

Log in to reply

How is it wrong as per you?

ashutosh gupta - 3 months ago

Yeah, I disagree

Neno Fuller - 1 year, 7 months ago

whats the crct explanation?

J E G A N N A T H Jegan - 9 months, 2 weeks ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...