Which current type is used by galvanic devices?

Which current type is used by galvanic devices?

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

Answer: (B)

Galvanic devices rely on a constant, unidirectional flow of electricity to drive chemical changes at the skin and to move ions in the treatment solutions. This requires direct current, which maintains a steady polarity so ions can migrate toward the opposite electrode and electrolysis can occur at the electrode interfaces. Alternating current would reverse direction and disrupt sustained ion movement, while pulsed current and microcurrent describe different waveforms or very low amplitudes that don’t define the continuous, one-way flow needed for galvanic action. Therefore, the current type used by galvanic devices is direct current.

Galvanic devices rely on a constant, unidirectional flow of electricity to drive chemical changes at the skin and to move ions in the treatment solutions. This requires direct current, which maintains a steady polarity so ions can migrate toward the opposite electrode and electrolysis can occur at the electrode interfaces. Alternating current would reverse direction and disrupt sustained ion movement, while pulsed current and microcurrent describe different waveforms or very low amplitudes that don’t define the continuous, one-way flow needed for galvanic action. Therefore, the current type used by galvanic devices is direct current.