An electromagnetic wave polarized parallel to the z-axis travels positively along the x-axis.?

How can this wave best be detected using a straight wire antenna?

A. Orient the antenna parallel to the x-axis.

B. Orient the antenna parallel to the y-axis.

C. Orient the antenna parallel to the z-axis.

D. The antenna will work equally well for any of these orientations.

E. This wave cannot be detected with a straight wire antenna. A loop antenna must be used.

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  • 1 year ago
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    C.

    When we say an EM wave is polarised parallel to the z-axis, by convention it means the direction of the wave's electric field is parallel to the z-axis.

    By having a straight wire parallel to the z-axis, conduction electrons will be free to oscillate backwards and forwards along the wire - which creates an oscillating emf (which is the signal).

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