The variation in current with time of an alternating current is shown by a sinusoidal wave in the given figure. The root mean square (rms) current for this alternating current is
Correct answer: C. Io/√2
- A. Io
- B. √2Io
- C. Io/√2
- D. 2Io
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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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