The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?
Correct answer: A. 1 W
- A. 1 W
- B. 2 W
- C. 4 W
- D. None of the above
Explanation
For r.m.s. values, output power is P = V_rms I_rms = 5 × 0.2 = 1 W. No power factor is specified, so unity power factor is assumed for the resistive load.
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