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Question: Answered & Verified by Expert
The impedance of a circuit consists of $3 \Omega$ resistance and $4 \Omega$ reactance. The power factor of the circuit is
PhysicsAlternating CurrentBITSATBITSAT 2012
Options:
  • A 0.4
  • B 0.6
  • C 0.8
  • D 1
Solution:
1020 Upvotes Verified Answer
The correct answer is: 0.6
$\tan \phi=\frac{\mathrm{X}}{\mathrm{R}} \times \frac{4}{3}$
Power factor $=\cos \phi=\frac{3}{5}=0.6$

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