What is the defining characteristic of an alternating current?
It changes voltage periodically.
It changes magnitude periodically.
It changes direction periodically.
It has a constant direction periodically.
Flashcards for Edexcel A Level Physics Alternating currents and rms values, covering the key terms, definitions and equations you need to recall for Paper 1, Paper 2 and Paper 3. 20 cards, matched to the Edexcel A Level Physics (9PH0) specification.
