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0 of 4 objectives have lessons · 0 studied · 0 secure
Lessons for this topic haven’t been written yet. The objectives below show exactly what the syllabus expects, so you can plan with them in the meantime.
What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Understand and use the terms period, frequency and peak value for an alternating current or voltage.
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Use equations of the form x = x₀ sin ωt to represent a sinusoidally alternating current or voltage.
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Recall and use the fact that, for a sinusoidal alternating current, the mean power in a resistive load is half of the maximum power.
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Distinguish between root-mean-square (r.m.s.) values and peak values, and recall and use I_r.m.s. = I₀ / √2 and V_r.m.s. = V₀ / √2 for a sinusoidal alternating current.
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