COMEDK · Physics · 23. Alternating Current
Power factor of a series \(L-C-R\) circuit is
- A \(R\)
- B \(\mathrm{Z} / \mathrm{R}\)
- C \(R / Z\)
- D RZ
Answer & Solution
Correct Answer
(C) \(R / Z\)
Step-by-step Solution
Detailed explanation
The power factor is the cosine of phase angle between voltage and current. For \(L-C-R\) circuit, it is given by \(\cos \phi=\frac{R}{Z}\) where, \(Z=\) impedance of circuit.
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