If the maximum amplitude of a sine wave is 200 V, what is its average (mean) value over one complete cycle?

Explanation

The peak value (Vp) of the sine wave is given as 200 V. The average value of a sine wave over a half cycle is Vp multiplied by 0.637, while its RMS value is Vp divided by √2 (approximately 0.707). Given the options, the value 141.4 V corresponds to the RMS voltage (200/√2 ≈ 141.4 V), which is commonly used as the effective voltage. Therefore, the correct answer is 141.4 V.