What is the normal open circuit voltage for each nickel-cadmium cell?

The normal open circuit voltage for a nickel-cadmium (NiCd) cell is approximately 1.2 volts. This value is commonly referenced in the context of rechargeable batteries. Nickel-cadmium cells have a nominal voltage that reflects their ability to deliver power across a wide range of applications and conditions, making them popular in various electronic devices.

The 1.2-volt output is a characteristic of the chemical composition of the nickel-cadmium technology, which involves specific electrochemical reactions when the battery is charged and discharged. This voltage is stable for the lifespan of the charge and helps provide consistent performance in devices, ensuring that they operate effectively throughout the battery's cycle.

Other voltages noted in the choices, like 1.0 volts, 1.5 volts, and 2.0 volts, do not accurately reflect the open circuit voltage of a typical nickel-cadmium cell, as they correspond to different types of batteries or setups. For instance, a 1.5-volt value is typically associated with alkaline batteries, while 2.0 volts is indicative of lead-acid cells. Thus, recognizing the standard open circuit voltage of 1.2 volts for nickel-cadmium is crucial for understanding its application and performance