In A.C circuits, the AC instruments indicate:
Correct answer: D. Virtual values
- A. Peak values
- B. Square of peak values
- C. Square root of peak values
- D. Virtual values
Explanation
In AC circuits, AC instruments typically indicate virtual values. Virtual values are the effective or RMS (Root Mean Square) values of the AC quantities.
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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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