Which statement correctly pairs a current value with its effect?

Which statement correctly pairs a current value with its effect?

• A. 1 mA — Noticeable shock
• B. 10 mA — Fatal shock
• C. 100 mA — Noticeable shock
• D. 1000 mA — Involuntary muscle control

Answer: (A)

Current through the body translates directly into the sensation or effect you feel, and the threshold where you first notice it is around one milliampere for typical alternating current. That means a value near one milliampere produces a detectable tingling or "noticeable" sensation, which is the right match for this statement. As the current increases, effects escalate: about ten milliamperes can cause stronger tingling and possible muscle reactions but is not typically dangerous by itself; around one hundred milliamperes can be hazardous because it increases the risk of heart rhythm problems, especially with AC; and about one ampere can cause powerful muscle contractions and can disrupt breathing, carrying a high risk of serious harm. So linking the smallest perceptible current to a noticeable sensation is the best-fit pairing among the options.

Current through the body translates directly into the sensation or effect you feel, and the threshold where you first notice it is around one milliampere for typical alternating current. That means a value near one milliampere produces a detectable tingling or "noticeable" sensation, which is the right match for this statement. As the current increases, effects escalate: about ten milliamperes can cause stronger tingling and possible muscle reactions but is not typically dangerous by itself; around one hundred milliamperes can be hazardous because it increases the risk of heart rhythm problems, especially with AC; and about one ampere can cause powerful muscle contractions and can disrupt breathing, carrying a high risk of serious harm. So linking the smallest perceptible current to a noticeable sensation is the best-fit pairing among the options.