Final answer:
If an alternator is not charging at all, a load test would be required to determine its ability to produce electrical power under normal operating conditions.
Step-by-step explanation:
If an alternator is not charging at all, a load test would be required. A load test is used to determine the ability of the alternator to produce electrical power under normal operating conditions. It helps identify any issues with the alternator's ability to generate electrical power and may involve connecting the alternator to a load bank to measure its performance.