What is the RMS value of a 340-volt peak-to-peak pure sine wave?

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Multiple Choice

What is the RMS value of a 340-volt peak-to-peak pure sine wave?

For a sine wave, the RMS value is the peak value divided by the square root of 2. A peak-to-peak voltage of 340 V means the positive peak and negative peak differ by 340 V, so the peak amplitude is half of that: Vpeak = 340/2 = 170 V. Then Vrms = Vpeak/√2 = 170/√2 ≈ 120.2 V. So the RMS value is about 120 volts AC.

For a sine wave, the RMS value is the peak value divided by the square root of 2. A peak-to-peak voltage of 340 V means the positive peak and negative peak differ by 340 V, so the peak amplitude is half of that: Vpeak = 340/2 = 170 V. Then Vrms = Vpeak/√2 = 170/√2 ≈ 120.2 V. So the RMS value is about 120 volts AC.

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