Which combination best describes the energy delivered by electronic control devices?

Which combination best describes the energy delivered by electronic control devices?

• A. High Current and High Voltage
• B. Low Amperage and Wattage with High Voltage
• C. High Amperage with Low Voltage
• D. Low Voltage and Low Current

Answer: (B)

Energy delivered by electronic control devices hinges on voltage, current, and the duration of the pulse. These devices use a very high voltage to push current through the body's resistance, but the actual current that flows is kept deliberately small and the pulse is short. Since energy is roughly voltage times current times time, a high voltage with low current and a brief pulse results in relatively low energy. That’s why the description of high voltage paired with low current (and low wattage) best matches how these devices operate. The other scenarios imply more current or more power, which would mean delivering more energy than these devices are designed to use.

Energy delivered by electronic control devices hinges on voltage, current, and the duration of the pulse. These devices use a very high voltage to push current through the body's resistance, but the actual current that flows is kept deliberately small and the pulse is short. Since energy is roughly voltage times current times time, a high voltage with low current and a brief pulse results in relatively low energy. That’s why the description of high voltage paired with low current (and low wattage) best matches how these devices operate. The other scenarios imply more current or more power, which would mean delivering more energy than these devices are designed to use.