reek v. Old English recan (Anglian), reocan (West Saxon) emit smoke, from Proto-Germanic *reukanan (cf. Old Frisian reka smoke, Middle Dutch roken, Dutch rieken to smoke, Old High German riohhan to smoke, steam, German rauchen to smoke, riechen to smell).
Ohm's law states that the current drawn depends on the resistance of the body. The resistance of human skin varies from person to person and fluctuates between different times of day. The NIOSH states Under dry conditions, the resistance offered by the human body may be as high as 100,000 Ohms. Wet or broken skin may drop the body's resistance to 1,000 Ohms, adding that high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 Ohms.
The threshold of sensation for humans is one milliamp (1mA), while a sustained current of 200mA is fatal-able to stop a typical human heart weighing around 300g. According to Ohm's Law, current passing through a conductor is given by voltage divided by electrical resistance, measured in ohms. The resistance of human skin varies between 1,000 ohms (wet skin) to 100,000 (dry), so the lethal voltages are 200V and 20,000V respectively. A 400g heart (the most a healthy heart can weigh) might take up to 27,000V. At high voltages, extra physics comes into play.