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What is the order of magnitude of the resistance of a dry human body?

1. \( 10 \Omega \)
2. \( 10^{4} \Omega \)
3. 10 М\Omega
4. \( 10 \mu \Omega \)

Correct answer: \( 10^{4} \Omega \)

Solution

A dry human body has high resistance mainly because dry skin is a poor conductor. Typical values are around tens of kilo-ohms, so the nearest order of magnitude is 10^4 ohms.

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