When a DC voltage of 1.0 volts is applied across the leads of a galvanic isolator, what is the maximum allowable resultant current?

The correct maximum allowable resultant current when a DC voltage of 1.0 volts is applied across the leads of a galvanic isolator is 0.03 amperes. This specification is derived from the design and operational parameters of galvanic isolators, which are used primarily in marine applications to prevent galvanic corrosion and maintain the integrity of electrical systems.

The galvanic isolator works by allowing a minimal amount of current (in this case, 0.03 amperes) to flow under specific conditions, designed to ensure that it performs its function safely without exceeding limits that could lead to overheating or damage. This current limit is crucial in maintaining the safety of both the isolator and the connected systems, ensuring they operate within their specified electrical ratings. When a DC voltage is applied, the resultant current is kept within this threshold to prevent any negative effects on the isolator's functionality and reliability.

The other options represent higher current limits that may exceed the safe operational range of the galvanic isolator, which could compromise its ability to prevent galvanic corrosion effectively or lead to potential failure of the unit itself. Therefore, 0.03 amperes is the correct maximum allowable current that aligns with the operational specifications of galvanic isolators.