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← ScienceWhich outcome occurs when a voltage standing wave is established on unterminated coaxial cable?
A)Radiated signal power is maximized
B)Dielectric breakdown risk significantly increases✓
C)Capacitance along the cable becomes uniform
D)Cable impedance becomes purely resistive
💡 Explanation
When a standing wave exists, there are points of high voltage; the peak voltage may exceed the cable's dielectric strength, because this voltage results from constructive interference via superposition. Therefore, dielectric breakdown risk rises , rather than uniform capacitance or radiated power, when high voltages are sustained in the dielectric.
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