The power factor of an a.c. circuit having resistance R and inductance L connected in…
Physics · JEE Main · NTA Exams — Electromagnetic Induction and Alternating Currents
The power factor of an a.c. circuit having resistance R and inductance L connected in series to an a.c. source of angular frequency ω is
- R/ωL
- ωL/R
- \(\mathrm{R} / \sqrt{\mathrm{R}^{2}+\omega^{2} \mathrm{~L}^{2}}\)
- zero
Answer
(C) R / R ^ 2 + ^ 2 ~L ^ 2
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