the resistance of the skin on a person's finger is typically about 20,000 ohms. ?

How much voltage would be needed to cause a current of 0.001 A to flow into the finger?

3 Answers

Relevance
  • 3 weeks ago

    V=IR=0.001 * 20,000 = 20.  Doesn't take much to get such a tiny current, in other words.

  • 3 weeks ago

    20 Volts / 20000 ohms = 1/1000 A ( 0.001 A)

  • alex
    Lv 7
    3 weeks ago

    V = RI = ... = 20 

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