How does wetness affect the electrical resistance of the human body?

• A. Wetness has no effect on the body's electrical resistance.
• B. Wet skin decreases the body's resistance, allowing more current to flow.
• C. Wet skin causes the body's resistance to fluctuate randomly.
• D. Wet skin increases the body's resistance, reducing the flow of current.

Answer: (B)

Verified step by step guidance

1. Understand that the human body's electrical resistance depends largely on the condition of the skin, which acts as a barrier to electric current.
2. Recognize that dry skin has a higher resistance because it is less conductive, limiting the flow of electric current through the body.
3. Know that when the skin is wet, water (which contains ions) creates a conductive path on the skin's surface, effectively lowering the body's overall resistance.
4. Apply the concept that lower resistance allows more electric current to flow through the body for a given voltage, increasing the risk of electric shock.
5. Conclude that wetness decreases the body's electrical resistance, making it easier for current to pass through.