An electric dipole with its center located at the origin of a Cartesian coordinate system oscillates along the x axis, creating an electromagnetic wave.
Part A: At a position on the z axis far from the origin, what is the polarization of the wave?
Part B: At a position on the axis far from the origin, what is the polarization of the wave?

Respuesta :

Answer:

The wave propagates on the z axis and the polarization is linear on the x axis

Explanation:

Part A

When the two dipole charges oscillate they form a fluctuating wave that propagates in the perpendicular direction, so if the oscillation of the magnetic field is on the axis and the propagation of the wave occurs on the z-axis.

The polarization of the electric wave is equal to the direction of the electric field, therefore as the field oscillates on the x-axis the polarization is also on the x-axis and is linearly polarized.

Part B

The wave propagates on the z axis and the polarization is linear on the x axis

(A) The wave propagates along the z-axis

(B) The polarization is linear along the x-axis

Oscillating dipole:

(A) The oscillation of a dipole means that the two charges constituting the dipole oscillate along the line joining them, coming closer and then moving far, and repeating this sequence.

When the charges oscillate they form a fluctuating wave that propagates in the perpendicular direction of the oscillation of the charges, so if the oscillation of the electric field is on the x-axis and the propagation of the wave occurs on the z-axis.

The polarization of the electric wave is in the same direction as the electric field, therefore as the field is directed from one charge to another in a dipole, it oscillates on the x-axis, and the polarization is also on the x-axis and the type of polarization is linearly polarized.

(B) The wave propagates along the z-axis and the polarization is linearly polarized along the x-axis

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