Study checklist

21.1 Characteristics of alternating currents

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4 steps

21.1.1—The terms period, frequency and peak value as applied to an alternating

21.1.2—Equations of the form x = x0 sin ωt representing a sinusoidally alternating

21.1.3—The fact that the mean power in a resistive load is half the maximum power

21.1.4—Root-mean-square (r.m.s.) and peak values and recall and use I r.m.s. = I0 /

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Study checklist21.1 Characteristics of alternating currents