Question

The RMS value of AC is:

• A. \( 0.707 \times \text{Peak value} \)
• B. \( 1.414 \times \text{Peak value} \)
• C. \( 0.5 \times \text{Peak value} \)
• D. \( 1 \times \text{Peak value} \)

Hint:

The RMS value of AC is always \( 0.707 \) times the peak value for a sinusoidal wave.

Answer 1

The Correct Option is A

Step 1: Definition of RMS value. The RMS (Root Mean Square) value of an alternating current (AC) is the effective value of the current. For a sinusoidal wave, it is given by: \[ I_{\text{RMS}} = \frac{I_{\text{peak}}}{\sqrt{2}} = 0.707 \times I_{\text{peak}} \]
Step 2: Conclusion. Thus, the RMS value is \( 0.707 \times \text{Peak value} \).