Question: Q 3 1 . 2 The current in an ac power line changes direction 1 2 0 times per second, and its average value is

Q31.2 The current in an ac power line changes direction 120 times per second, and its average value is zero. Explain how it is possible for power to be transmitted in such a system.
Q 3 1 . 2 The current in an ac power line changes

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