In alternating current, the average value of current in one complete cycle is
Correct answer: A. 0
- A. 0
- B. Constant
- C. Positive
- D. Max
Explanation
A complete AC cycle consists of a positive half-cycle and a negative half-cycle that are perfectly symmetrical. The positive current in the first half is completely cancelled out by the equal and opposite negative current in the second half. This makes the average value over one full cycle zero.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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