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The average power in an electromagnetic wave is given by(a) propagation constant(b) poynting vector(c) phase constant(d) attenuation constantThe question was asked in exam.Asked question is from Input and Characteristic Impedances topic in portion Transmission Lines of Electromagnetic Theory |
Answer» CORRECT answer is (b) poynting VECTOR To explain I would say: The Poynting vector is the CROSS product of the electric field and magnetic field INTENSITIES. It gives the total power of an electromagnetic wave. |
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