What component measures the resultant current in the galvanic isolator testing procedure?

The component that measures the resultant current in the galvanic isolator testing procedure is the ammeter. An ammeter is specifically designed to measure electric current flowing through a circuit, typically in amperes. In the context of galvanic isolation, where it is crucial to monitor the flow of current to ensure safety and prevent galvanic corrosion, the ammeter provides real-time data on the effectiveness of the isolator by indicating how much current is being managed.

Using an ammeter allows technicians to determine whether the isolation is working as intended, which is essential for maintaining the integrity of the electrical systems in boats and minimizing corrosion risks. The other options are not suitable for this purpose: a voltmeter measures voltage, an ohmmeter measures resistance, and a capacimeter is used to measure capacitance. Each of these has a different function and does not provide the necessary data regarding current flow in the context of a galvanic isolator.