Electricity becomes hazardous to humans when which condition occurs?

Electricity becomes hazardous to humans when which condition occurs?

• A. When it is turned off
• B. When it completes a circuit through the body
• C. When it is in contact with water
• D. Only when it is above 100 volts

Answer: (B)

Electricity is hazardous when current can flow through the body by creating a complete path from the energized source back to the return point. The danger comes from the current passing through tissues, which can cause shocks, burns, or interfere with the heart. When a person completes a circuit through the body, there is a path for current to travel, making harm possible. Turning off the power removes the energy and eliminates the danger, but the fundamental condition that makes electricity dangerous is the presence of a completed circuit through the body. Water or moisture increases how much current can flow for a given voltage, raising risk, while voltage level alone isn’t the sole determinant—even lower voltages can be hazardous if a circuit is completed through the body.

Electricity is hazardous when current can flow through the body by creating a complete path from the energized source back to the return point. The danger comes from the current passing through tissues, which can cause shocks, burns, or interfere with the heart. When a person completes a circuit through the body, there is a path for current to travel, making harm possible. Turning off the power removes the energy and eliminates the danger, but the fundamental condition that makes electricity dangerous is the presence of a completed circuit through the body. Water or moisture increases how much current can flow for a given voltage, raising risk, while voltage level alone isn’t the sole determinant—even lower voltages can be hazardous if a circuit is completed through the body.