What voltage would produce a noticeable current through dry skin?

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The discussion focuses on determining the minimum voltage required to produce a noticeable current through dry skin, where the resistance is approximately 1.1 × 10^5 ohms. It is noted that a current of 1 mA can be felt, while 5 mA is painful, and higher currents can lead to severe consequences. The relevant equation for solving the problem is V = IR, where V is voltage, I is current, and R is resistance. Participants seek clarification on how to apply this equation to find the voltage that results in a current of at least 1 mA. Understanding the relationship between voltage, current, and resistance is essential for solving this electrical safety issue.
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Homework Statement



The damage caused by electric shock depends
on the current flowing through the body;
1 mA can be felt and 5 mA is painful. Above
15 mA, a person loses muscle control, and 70
mA can be fatal. A person with dry skin has a
resistance from one arm to the other of about
1.1 × 10^5
. When skin is wet, the resistance
drops to about 5100
.
What is the minimum voltage placed across
the arms that would produce a current that
could be felt by a person with dry skin?
Answer in units of V.

Homework Equations



V=R*I

The Attempt at a Solution



i want to know the procedure to solve this problem
i have tried, but i don't quite understand the problem
 
Last edited:
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You haven't specified the units of resistance, but assuming you have them there with you, the resistance is "R" in the equation. The current is expressed as "I" in the equation. "V" is the voltage. And you have the equation V = IR, so...
 

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