For a sine wave, the form factor is given by:
Correct answer: A. π /2√2
- A. π /2√2
- B. π /2
- C. √2 π
- D. 2√2 π
Explanation
It represents the form factor for a sine wave when considering the peak value divided by the average value. While the form factor is undefined when considering RMS value divided by average value, interpreting it as peak value divided by average value results in this value.
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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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