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The root mean square value of an alternating current is related to the peak current $I_0$ by which formula?
- A.$I_{\text{rms}} = I_0$
- B.$I_{\text{rms}} = I_0 / 2$
- C.$I_{\text{rms}} = I_0 / \sqrt{2}$
- D.$I_{\text{rms}} = I_0 \sqrt{2}$
Show correct answer & step-by-step solution
Correct answer: C — $I_{\text{rms}} = I_0 / \sqrt{2}$
Solution
The root mean square value of a sinusoidal alternating current is defined as the peak value divided by the square root of two, .
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