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List of Partners vendors. Featured Video. Article Sources. The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Read More. Some injuries and further complications may not yet be obvious.
An examination in hospital is important after any electric shock. The first thing you must do is disconnect the power supply. Be especially careful in wet areas, such as bathrooms, as water conducts electricity. It may be safer to turn off the electricity supply to the building if possible to be absolutely sure. First aid for electrical shock includes:. Sometimes, powerlines are downed in car accidents. The powerlines may drape over the vehicles. The tyres act as insulation, so urge anyone inside the car to stay there where they will be safe from electric shock.
Do not approach the scene until it has been declared safe by the proper authorities. Stand well back and try to encourage any bystanders to keep a distance of at least six metres. Even if the lines or wires are not moving, they may still be live.
All wires should be treated as if they are live. If a person is forced to get out of the vehicle because of a hazard such as fire, instruct them to keep their feet close together and to jump away, not walk. This can reduce the chance of an electric shock if wires are on the ground. Only advise this action if the person is definitely unable to remain in the vehicle.
A safety switch, or residual current device, is designed to save lives by monitoring power flow and making sure the flow is even. This is different to a circuit breaker, which is designed to protect household wiring from power surges.
Our cells are specialized to conduct electrical currents. Electricity is required for the nervous system to send signals throughout the body and to the brain, making it possible for us to move, think and feel.
The elements in our bodies, like sodium, potassium, calcium, and magnesium, have a specific electrical charge. Almost all of our cells can use these charged elements, called ions, to generate electricity. The contents of the cell are protected from the outside environment by a cell membrane. This cell membrane is made up of lipids that create a barrier that only certain substances can cross to reach the cell interior.
Not only does the cell membrane function as a barrier to molecules, it also acts as a way for the cell to generate electrical currents. Resting cells are negatively charged on the inside, while the outside environment is more positively charged.
When you touch a doorknob or something else made of metal , which has a positive charge with few electrons, the extra electrons want to jump from you to the knob. That tiny shock you feel is a result of the quick movement of these electrons. You can think of a shock as a river of millions of electrons flying through the air. Pretty cool, huh? Static electricity happens more often during the colder seasons because the air is drier, and it's easier to build up electrons on the skin's surface.
In warmer weather, the moisture in the air helps electrons move off of you more quickly so you don't get such a big static charge. So, the next time you get a little shock from touching a doorknob, you'll know that it's just electrons jumping around.
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