If skin is moist, what effect does this have on electrical safety?

• A. It increases conductivity, making shocks more likely
• B. It decreases conductivity
• C. It has no effect
• D. It improves insulation

Answer: (A)

Moisture on the skin lowers its resistance, so the body becomes a better path for electricity. With the same voltage, a wetter skin lets more current flow through you (I = V/R). That higher current increases both the likelihood of shock and the potential for burns or other injuries. Dry skin has higher resistance and acts as a partial barrier, but when skin is wet, that barrier is diminished. This is why electrical safety guidance emphasizes keeping hands and work areas dry, using insulated tools and PPE, and avoiding contact with live parts in damp conditions. The idea that moisture has no effect or that it improves insulation isn’t correct—the presence of moisture actually makes conduction through the skin easier and shocks more dangerous.