BEFORE YOU GET ELECTROCUTED!!!

To understand the effect of electrical current on the human body, it is very paramount to know what Electric current, voltage and potential is:
Electric current is said to be a flow of electric charge passing through a conductive medium which is often carried by moving electrons through a wire. Human body acts like a resistor. Just like the principle of osmosis, free charged particles move from region with high concentration to region with low concentration.
Human body is made up of 60% of water. The total amount of water in human is roughly 40 litres. The body water is divided into the following parts: Intracellular as well as extracellular fluids. These are electrolytes full of biochemical ions, meaning the body is very well conductive. If the voltage that is not changing is applied (DC), the direct current can flow through the extracellular fluids. DC cannot pass through the cell membranes, so it cannot flow intracellularly (contrary to AC).
ELECTRIC SHOCK

Electric shock occurs upon contact of a (human) body part with any source of electricity that causes a sufficient current through the skin, muscles, or hair. When there is an emergence of electrical shock, Electrical currents interfere with nerve impulses in the human body. This conclusively affects muscle contraction, heart functioning and breathing. On the other hand, burns can also occur.
Factors affect the severity of the shock a person receives when he or she is a part of an electrical circuit:
Amount of current that flows through the body
The path of the current through the body
Duration the body uses is in the circuit
The voltage of the current
Availability of moisture in the environment
The phase of the heart pulse when the shock takes place
The overall health of the victim prior to the shock
How fast the person is attended to.
Note: LOW VOLTAGE DOES NOT IMPLY LOW HAZARD!
Remedy: FIRST AID
If any of these signs or symptoms occur one call the emergency response team immediately:
Cardiac arrest
Burns
Heart rhythm problems (arrhythmias)
Respiratory failure
Muscle pain and contractions
Numbness and tingling
Unconsciousness
Seizures
PRECAUTION

Don't you ever touch the victim with your hands without insulator like gloves if still in contact with the electrical current.
Never get near high-voltage wires until the power is switched off. And if wires are jumping and sparking stay at least 20 feet away from the site.
Don't move the victim with an electrical injury unless in a critical life threatening state.
Picture and gif source : Google