Electric Shock
Electric shock occurs when an electrical current passes through the human body, disrupting normal electrical signals and potentially causing injury or death. Even low voltages can be dangerous depending on the path, duration, and individual factors
Causes
Electric shock happens when a person becomes part of an electrical circuit. This typically occurs when:
Touching a live wire or energized object
Contacting faulty appliances or exposed wiring
Standing in water while handling electrical devices
Accidentally bridging a voltage source and ground
REMEMBER:
The body conducts electricity, so current flows through tissues, nerves, and muscles, potentially causing harm
The Effects of Electric Shock
How Current Flows Through the Body:
Entry and exit points:
Shock severity depends on where the current enters and exits the body. For example, hand-to-hand or hand-to-foot paths can pass through the heart
Voltage and resistance: Higher voltages push more current through the body. Wet skin lowers resistance, increasing risk
The Types of Current
AC (Alternating Current) is more dangerous than DC (Direct Current) because it can cause muscle tetany, preventing the victim from letting go
DC (Direct Current) tends to cause a single muscle contraction and may throw the person away from the source
The Physical Effects of Electric Shock
Mild shock: Tingling or muscle twitching
Moderate shock: Pain, muscle contractions, difficulty breathing
Severe shock: Burns, cardiac arrest, unconsciousness, death
A voltage as low as 50 volts can block signals between the brain and muscles, leading to respiratory or cardiac failure