What is the average value of sinusoidal voltage that has a peak value of 15 volts?
Correct answer: A. 0 V
- A. 0 V
- B. 9.56 V
- C. 10.6 V
- D. 19.1 V
Explanation
The average value of a sinusoidal voltage over a complete cycle is 0 V. This is because the positive half-cycle exactly cancels out the negative half-cycle. Therefore, when you calculate the average over a full period, the result is zero. Option A is correct. Other options such as 9.56 V, 10.6 V, and 19.1 V do not apply to the average value of a sinusoidal waveform. They might confuse with other calculations like RMS values or peak values, but they do not represent the average over a full cycle.
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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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