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← ScienceWhich mechanism impedes signal propagation speed in a long coaxial cable with high capacitance?
A)Skin effect causing increased resistance
B)Dielectric absorption delaying charge release✓
C)Electromagnetic interference adding noise
D)Impedance mismatch reflecting signal
💡 Explanation
When capacitance is high, dielectric absorption becomes significant because the dielectric material between the conductors holds charge and releases it slowly, delaying signal transitions and impeding propagation speed along the cable. Therefore dielectric absorption results, rather than skin effect, interference, or reflections, which involve different mechanisms.
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