Multiple choice general knowledge math & puzzles The SI unit of electric current is Mho Farad Ohm Ampere Reveal answer Fill a bubble to check yourself D Correct answer Explanation The Ampere (A) is the standard International System of Units (SI) unit for electric current. Ohm is the unit for resistance, Farad for capacitance, and Mho (an older term for Siemens) for conductance.