I was watching a lecture on earth grounding in which the professor assumed what would happen if we do not earth our appliances. He said that if the hot wire some how touched the outer body of the appliance and we came into contact with it, while it's ON, we will fell a terrible shock if we are bare footed. Then he did the calculations in which he considered the whole 120V across the body of the person.
I wonder why he did it, because during electrocution the current goes through the body to earth and then all the way back to the grounded wire of the transformer, I assume that the the section of the earth between our feet and the grounded transformer wire should be in series with our body? And because earth should have some resistance, the current through our body would not be as large as was calculated by the professor where he neglected the resistance of the earth. Why did he neglect the resistance of earth?