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Which consequence results when a dielectric's breakdown strength is exceeded in a microwave waveguide?

A)Resonant frequency shifts downward linearly
B)Wave propagation ceases abruptly
C)Guide inductance increases gradually
D)Characteristic impedance remains matched

💡 Explanation

If the electric field within the dielectric surpasses its breakdown strength, dielectric breakdown occurs therefore establishing a conductive pathway obstructing further wave propagation rather than altering frequency, because current flow shorts the high-impedance part of the transmission line.

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