Electrocution is rare below: MP 09
**Core Concept**
Electric shock occurs when an electric current passes through the body, causing damage to tissues and organs. The severity of the injury depends on the voltage, current, and duration of exposure. The human body's resistance to electricity is measured in ohms.
**Why the Correct Answer is Right**
The human body's resistance to electricity is highest below 50-100 volts. At these low voltages, the current flowing through the body is too small to cause significant damage. However, above 50-100 volts, the current increases, and the risk of serious injury or death from electrocution rises. This is because the current can cause cardiac arrest, muscle contractions, and nerve damage.
**Why Each Wrong Option is Incorrect**
**Option A:** 12-15 volts, commonly seen in household electrical outlets, is actually a safe voltage for humans, as the current is too low to cause significant harm.
**Option B:** The correct answer is not 200-250 volts, as this voltage range can cause serious injury or death from electrocution.
**Option C:** 25-30 volts is a low voltage that is unlikely to cause electrocution, as the current is too small to cause significant damage.
**Clinical Pearl / High-Yield Fact**
Remember the "Ladder of Death" in electrocution: the severity of the injury increases with the voltage, current, and duration of exposure. Always prioritize electrical safety and avoid exposure to high-voltage sources.
**Correct Answer: B. 200-250 volts.**