Which mechanism causes signal degradation when an electric field encounters an imperfect Faraday cage?

💡 Explanation

When an external electric field encounters imperfections in a Faraday cage, capacitive coupling occurs because the gaps or perforations allow fringing electric fields to penetrate, inducing a voltage on the internal conductors. Therefore capacitive coupling degrades shielding, rather than eddy currents, breakdown or resonant absorption, which require different field conditions.

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