Question

At a certain instant in time, the electric field of an
electromagnetic wave in free space points in the -*z*
direction, and the magnetic field points in the +*y*
direction. In what direction is this wave traveling?

A) +*x* direction ___B) -*x* direction ___ C)
+*y* direction ___D) -*z* direction ___E) +*z*
direction ___

Please explain why you chose your answer

Answer #1

If the magnetic field of an electromagnetic wave is in the
+-direction and the electric field of the wave is in the
+-direction, the wave is traveling in the
-x-direction.
-y-direction.
+z-direction.
xy-plane.
-z-direction.

Problem 1
An electromagnetic wave propagates along the +y direction. If
the electric field at the origin is along the +z direction, what is
the direction of the magnetic field
2
If an electromagnetic wave has components Ey = E0 sin(kx - ?t)
and Bz = B0 sin(kx - ?t), in what direction is it traveling?

A plane electromagnetc sinusoidal wave of frequency 40 MHz
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instant, the electric field E has its maximum
value of 700 N/C and is along the y-axis. (a.) draw an illustration
of the electromagnetic wve in a coordinate system, and determine
the wavelength and period of the wave. (b.) calculate the magnitude
and direction of the magnetic field B when E= 700
N/C in the x-direction. (c) what is...

An electromagnetic wave is traveling straight down toward the
center of the Earth. At a certain moment in the time the electric
field ponts east. In which direction does the magnetic field point
at this moment? Explain your reasoning.

A linearly-polarized sinusoidal electromagnetic wave propagates
in the –x direction. At a particular moment in time, the magnetic
field at point (–4, 0, 0) points in the –z direction. At that same
moment at (–4, 0, 0), what is the direction of the electric field?
Drawing a diagram should help. Group of answer choices –z direction
+z direction +y direction –y direction

At some instant and location, the electric field associated with
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power flow per unit area, all at the same instant and location.

At one instant, the electric and magnetic fields at one point of
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=(220i^+300j^?60k^)V/m and B?
=(7.8i^?7.3j^+ak^)B0.
1) What is the value of a?
2) What is the value of B0?
3) What is the Poynting vector at this time and position? Find
the x-component.
4)Find the y-component.
5) Find the z-component.

At
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A plane electromagnetic wave varies sinusoidally at 98.2 MHz as
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The peak value of the electric field is 2.10 mV/m, and it is
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(a) Find the wavelength.
m
(b) Find the period.
ns
(c) Find the maximum value of the magnetic field.
pT
(d) Write expressions in SI units for the space and time variations
of the electric field. (x is in meters, and t...

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