Which mode uses an alternating current and is associated with high voltage and low amperage?

Which mode uses an alternating current and is associated with high voltage and low amperage?

• A. Alternating current
• B. Direct current
• C. Pulsed direct current
• D. Microcurrent

Answer: (A)

Understanding how current flows is key: alternating current reverses direction, unlike direct current which flows in one direction. In esthetic devices, the alternating-current mode is often described as delivering higher voltage with relatively low amperage, which allows current to reach deeper tissues without excessive heating. This matches the description given. Direct current and pulsed direct current use one-way flow (even when pulsed), and microcurrent uses very low voltage and current. So the alternating-current option is the best fit.

Understanding how current flows is key: alternating current reverses direction, unlike direct current which flows in one direction. In esthetic devices, the alternating-current mode is often described as delivering higher voltage with relatively low amperage, which allows current to reach deeper tissues without excessive heating. This matches the description given. Direct current and pulsed direct current use one-way flow (even when pulsed), and microcurrent uses very low voltage and current. So the alternating-current option is the best fit.