How much can perspiration lower skin resistance to electricity?

Perspiration can significantly lower the skin's resistance to electricity, and the choice indicating a reduction of 200 ohms reflects an understanding of how moisture affects electrical resistance. When skin is dry, its resistance is typically much higher, often in the range of thousands of ohms. However, sweat can create a conductive layer on the skin's surface that dramatically decreases this resistance.

This reduction in resistance is critical to understand in the context of workplace safety, especially when working around electrical equipment. Maintaining awareness of how factors like perspiration can change the conductivity of skin is vital for ensuring safe practices, as lower resistance can lead to a higher risk of electric shock or electrocution.

The other options reflect lesser degrees of resistance reduction, which may not adequately represent the significant impact of perspiration on electrical conductivity. Understanding this critical factor helps reinforce the importance of using protective gear and following safety protocols to minimize electric hazards in environments where electrical exposure is a risk.