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JAMB Physics 2010 Question 43

Question 43

Alternating Current Circuits

In alternating current circuit at resonance, the angle of lead or lag is

  1. A.π°/2
  2. B.0°
  3. C.π°/3
  4. D.π°
Show the answer and explanation

Answer: B (0°)

Explanation

At resonance the inductive and capacitive reactances cancel, leaving only resistance. Current and voltage are in phase, so the phase angle is 0°.