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← ScienceWhich risk increases when a long, unterminated coaxial cable carrying high-frequency signals acts as a capacitor during transmission?
A)Signal reflections and standing waves✓
B)Dielectric breakdown and insulation overheating
C)Capacitive reactance limiting bandwidth
D)Increased skin effect power losses
💡 Explanation
When a long unterminated coaxial cable acts as a capacitor, impedance mismatch causes signal reflections because the wave encounters an open circuit and reflects back, resulting in standing waves. Therefore signal reflections increase, rather than breakdown, reactance limiting, or power losses which require different electrical conditions and frequency ranges.
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