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 man with dry skin has a resistance from one arm to the other of about 1 × 105. When skin is wet, the resistance drops to about 4700.
Find the minimum voltage placed across the arms that would produce a current that could be felt by a man with dry skin?
Answer in units of V.
Using the same electric potential as in Part 1, Find what would be the current if the man had wet skin?
Answer in units of mA.