As Everyone Knows Electricity Can Be Very Dangerous Lethal Even For Human Beings And All Living Things The Biologi 1 (102.5 KiB) Viewed 36 times
As everyone knows, electricity can be very dangerous, lethal even, for human beings (and all living things). The biological reason for this is that current flowing through the body interferes with the electrical nerve impulses that are essential for respiration and heart beat. (There's also really serious burns created by the heat produced when the current flows through tissue.) A current of merely 100 mA can be lethal. (a.) Explain the old adage: It's not the voltage but the current that kills. What is the physical difference between the two that makes current more dangerous than potential? (b.) Is it possible for a person to be subjected to a very large voltage without being in danger? If so, explain how this would be possible.
(g.) A typical household outlet has a voltage of around 300 V. (We'll come back and explain this better later in the class.) What do your simple calculations reveal about the dangers of household outlets?
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