The National Institute for Occupational Safety and Health (NIOSH) states \"Under

Question

The National Institute for Occupational Safety and Health (NIOSH) states "Under dry conditions, the resistance offered by the human body may be as high as 100,000 Ohms. Wet or broken skin may drop the body's resistance to 1,000 Ohms," adding that "high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 Ohms." In class you learned that Amperage kills you, not Voltage, and that the lethal range of Amperage runs from about 100 to 200 mAmps (0.100 – 0.200 A). Interpret the risk of working around the battery in your car.

Explanation / Answer

Assuming battery has a terminal voltage of 12 volts

With normal body

Current=12/100000=12*10(-5) A so no risk of death or any injury

For wet body

Current=12/1000=12mA so chance of injury is not there as current is stil less than 100 mA

For last case

Current=12/500=24 mA

Again no chance of injury

So at 12V we are safe in all 3 conditions

For different voltages ,it may change

It depends on the votage of battery

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