What is the nominal voltage rating of a fully charged nickel-cadmium battery with twenty cells?

The nominal voltage rating of a fully charged nickel-cadmium battery can be calculated based on the number of cells in the battery and the nominal voltage of each cell. Each nickel-cadmium cell has a nominal voltage of approximately 1.2 volts.

For a battery composed of twenty cells, you can determine the total nominal voltage by multiplying the number of cells by the nominal voltage of each cell:

20 cells × 1.2 volts per cell = 24 volts.

When considering the fully charged state, nickel-cadmium batteries can have a slightly higher voltage, which may lead to a typical operating voltage of approximately 25 volts in practical applications, particularly when factoring in variations due to load and temperature.

This understanding emphasizes that a configuration of twenty cells operating with the nominal voltage of nickel-cadmium batteries leads to around 25 volts, making this option the most appropriate choice for the nominal voltage of a fully charged nickel-cadmium battery in this scenario.