Electrical currents of as little as approximately 0.06 A can be dangerous, and even fatal. Currents of this magnitude can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a human body can be as high as Omega100 kΩ for contact with dry skin; but the resistance can be a hundred times smaller for wet skin, or if the skin is broken. Calculate the voltages that can cause a current of 0.06 A through a human body for dry skin and for wet skin.

Explanation:

From ohms law.

V=IR

Then, if the dry skin has a resistance of 100KΩ

R=100kΩ

1kΩ=1000Ω

R=100000Ω

Dry skin

The current of 0.06A

Then,

V=100000×0.06

V=6000Volts

That is a very big voltage

V=6KV

For a wet skin

The resistance of the body is , 100 times smaller than dry skin

Then,

R=100kΩ/100

R=1kΩ =1000Ω

The resistance of wet skin is 1000ohms

Using ohms law

V=IR

V=0.06×1000

V=60Volts

Therefore, a large voltage of 6000Volts can cause a current of 0.06A in a dry skin while, a voltage of 60V can cause a current of 0.06A in a wet skin

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000