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🔍 PREVIEW MODE – Only you can see this. Back to Admin EduTek Lesson Notes Shop Print PDF Home › SS › Physics › Alternating Current SS 2 Alternating Current (AC) Physics SS 2 Second Term Introduction to Alternating Current Alternating Current (AC) is an electric current that periodically reverses direction and changes its magnitude continuously with time. Unlike direct current (DC), which flows in one direction, AC flows back and forth in a circuit. 📌 Key Concepts: AC is produced by alternating v [Preview only]