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  4. The maximum value of AC voltage in a circuit is 707 V . Its rms value is:

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Q. The maximum value of AC voltage in a circuit is $ 707 \,V $ . Its rms value is:

KEAMKEAM 2004Alternating Current

Solution:

$ {{V}_{rms}}=\frac{{{V}_{0}}}{\sqrt{2}}=\frac{707\sqrt{2}}{2}\approx 500\,V $