Engineering Board Exam Reviewer · Physics · medium

A series RL circuit has R = 30 and XL = 40 . What is the power factor?

  1. 0.8 lagging
  2. 0.6 leading
  3. 0.6 lagging
  4. 0.75 lagging

Answer

C. 0.6 lagging

Solution

pf = = R/Z = 30/50 = 0.6 (lagging, since the circuit is inductive).

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