An Electric shock can occur upon contact of a human or animal body with any source of voltage high enough to cause sufficient current flow through the muscles or nerves. <span style="font-size: 1...
- The level of voltage is not a direct guide to the level of injury or danger of death, despite the common misconception that it is.
- A small shock from static electricity may contain thousands of volts but has very little current behind it due to high internal resistance.
- Physiological effects and damage are generally determined by current and duration. Even a low voltage causing a current of extended duration can be fatal.
- It should be noted, however, that Ohm's Law directly correlates voltage and current for a given resistance; thus, for a particular path through the body under a particular set of conditions, a higher voltage will produce a higher current flow.
Causes of electric shock :
- Electric shock is caused by a difference in conduction of electricity across different surfaces. Electricity will always find the path to ground (or the completion of a circuit) that offers the least amount of resistance.
- When any object providing less resistance than the normal circuit enters the path of the electrons, the current will leave the circuit and travel through the new path to ground.
- This principle is why birds can stand on electrical wires and be safe, yet a downed electrical wire can be deadly for several hundred feet in all directions.
- Electricity dissipates in various and unpredictable ways.
- If you have a difference in voltage from one place to another, and there is a circuit completion (a wire, a finger) in between, current will jump across.
- Electric shock is not the state of being electrically energized that can be totally harmless if controlled; it is the state of completing a circuit, or bridging the gap between conductors.