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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 60000 ω. when skin is wet, the resistance drops to about 4900 ω. 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.

Respuesta :

skyluke89
We can solve the problem by using Ohm's law.

The resistance of the person, with dry skin, is [tex]R=60000 \Omega[/tex]. In order to be felt, the current must be at least 
[tex]I=1 mA=0.001 A[/tex]

Ohm's law gives us the relationship between current and voltage:
[tex]V=IR[/tex]
where 
I is the current
R the resistance 
V the voltage

Using the data of the problem, we find that the minimum voltage needed is
[tex]V=IR=(0.001 A)(60000 \Omega)=60 V[/tex]

The current felt by the person is 1 mA. The minimum voltage of 60 V is required across the arms of the person to produce the current that could be felt by the person.

What is voltage?

The voltage is defined as the difference in electric potential between two points.

Given that the resistance R of the dry skin of a person is 60000 ohms. The current flowing through the body which can be felt by the person is 1 mA.

The voltage across the arms of the person is calculated by ohm's law.

[tex]V = IR[/tex]

[tex]V = 1 \times 10^{-3} \times 60000[/tex]

[tex]V = 60 \;\rm V[/tex]

Hence we can conclude that the voltage across the arms of the person is 60 V which produces a current that could be felt by the person.

To know more about the voltage, follow the link given below.

https://brainly.com/question/2364325.

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