IB Physics SL B.5.10 Direct and Alternating Current

Practise distinguishing one-direction direct current from periodically reversing alternating current and interpreting peak, rms, rectified and smoothed voltage or current graphs.

Syllabus
First assessment 2025
Objective
—
Level
SL

Exam points

  • identify DC from one-direction charge flow and AC from periodically reversing direction
  • convert sinusoidal peak and rms values with Vpeak = √2Vrms or Ipeak = √2Irms
  • sketch half-wave or full-wave rectification and explain capacitor smoothing between peaks

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