The rms value of an AC voltage is defined by where T is the period of the
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where T is the period of the waveform.
(a) A voltage is given by v(t) = Vcos(ωt). Show that vrms = V/ˆš2 and is independent of ω. (The relationship between the period T and the radian frequency ω is T = 2Ï€/ω.)
(b) A voltage is given by v(t) = 2.5cos(350t) + 3V. Determine vrms.
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