How does moisture in connectors affect performance?

• A. It increases resistance and can cause intermittent signals or weak audio.
• B. It lowers resistance and improves signal quality.
• C. It has no effect on performance.
• D. It waterproofs the connectors.

Answer: (A)

Moisture on electrical contacts raises the resistance of the connection and can disrupt continuity. In a sound-powered telephone setup, the audio signal relies on a clean, low-impedance path between plug and jack. A thin film of moisture, and any resulting corrosion, makes the contact surfaces less perfect, increasing resistance and making the connection more prone to intermittent contact as conditions change. That higher resistance means less current reaches the headset, yielding weaker audio and possible dropouts.

So, moisture doesn’t lower resistance or boost quality, nor does it have no effect or waterproof the connectors. It degrades performance by increasing resistance and risking intermittent signals.