What formula is used to calculate the percentage of duty cycle (%DC)?

The formula that accurately calculates the percentage of duty cycle (%DC) is expressed as pulse width (ms) multiplied by the frequency (Hz) and adjusted to reflect a percentage. The correct choice effectively captures the relationship between these two parameters, which are essential in understanding how long a signal is active compared to the total time for one complete cycle.

In the context of electrofishing, the duty cycle indicates the proportion of time the electrical current is on during a specific time interval. A frequency in hertz (Hz) denotes how many cycles occur in one second, while pulse width in milliseconds (ms) indicates the duration of each individual pulse. Therefore, the formula correctly aligns these values to derive a percentage that showcases the operational efficiency of the electrofishing equipment.

This calculation is crucial because it influences the effectiveness of the electrofishing process, affecting fish catch rates and minimizing harm to the aquatic environment. By understanding how to derive the duty cycle using this formula, practitioners can optimize their settings for better performance and safety.