Answer :
When determining if an automotive battery is considered "dead," it's important to know that a fully charged automotive battery typically has a voltage of around 12.6 volts to 12.8 volts. A battery is generally considered weak or "dead" when its voltage falls below 12 volts because it may not have enough power to start a vehicle or operate its systems effectively.
Now let's evaluate the given options:
- 11.89 volts: This voltage is below 12 volts, which indicates the battery is indeed considered "dead" or too weak to function properly.
- 12.06 volts: This voltage is slightly above 12 volts, suggesting the battery is not completely dead but may be weak.
- 12.24 volts: This voltage shows the battery is in a fair condition as it is above 12 volts.
- 12.45 volts: This voltage indicates a battery that is in good condition, as it's closer to the fully charged range.
Among the options given, 11.89 volts is the voltage at which an automotive battery is considered "dead." This is because it is the only option below 12 volts, which is the threshold commonly used to indicate a "dead" battery.
Now let's evaluate the given options:
- 11.89 volts: This voltage is below 12 volts, which indicates the battery is indeed considered "dead" or too weak to function properly.
- 12.06 volts: This voltage is slightly above 12 volts, suggesting the battery is not completely dead but may be weak.
- 12.24 volts: This voltage shows the battery is in a fair condition as it is above 12 volts.
- 12.45 volts: This voltage indicates a battery that is in good condition, as it's closer to the fully charged range.
Among the options given, 11.89 volts is the voltage at which an automotive battery is considered "dead." This is because it is the only option below 12 volts, which is the threshold commonly used to indicate a "dead" battery.