Question:
RMS value of AC is _______ of the peak value
RMS value of AC is _______ of the peak value
Updated On: Apr 30, 2026
- 7%
- 7.70%
- 70%
- 70.70%
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The Correct Option is D
Solution and Explanation
Solution 1 (Standard Approach)
For a sinusoidal alternating current, the RMS value is defined as:
\(I_{\text{rms}} = \frac{I_0}{\sqrt{2}}\)
Where \(I_0\) is the peak value of current.
Substituting value:
\(I_{\text{rms}} = 0.707\,I_0\)
Thus, RMS value is \(70.7\%\) of the peak value.
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Concepts Used:
AC Voltage
When voltage changes its direction after every half cycle is known as alternating voltage. The current flows in the circuit at that time are known as alternating current. The alternating current(AC) follows the sine function which changes its polarity concerning time. Most of the electrical devices are operating on the ac voltage.
