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CAIE A-Level Physics A2 21.1 Characteristics of Alternating Currents Questions

Practise analysing sinusoidal current and voltage, period, frequency, peak and rms values, and calculating mean or instantaneous resistive power.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • analyse period, frequency, peak and rms values and use sinusoidal current or voltage equations
  • calculate mean and instantaneous power in a resistive load

Covered syllabus points

21.1.1—The terms period, frequency and peak value as applied to an alternating21.1.2—Equations of the form x = x0 sin ωt representing a sinusoidally alternating21.1.3—The fact that the mean power in a resistive load is half the maximum power21.1.4—Root-mean-square (r.m.s.) and peak values and recall and use I r.m.s. = I0 /

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