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JEE Main 2002
Exam
JEE Main
Year
2002
Subject
Physics
Chapter
Alternating Current

JEE Main 2002 · Physics · Alternating Current

The power factor of an A C circuit having resistance (R) and...

The power factor of an ACA C circuit having resistance (R)(R) and inductance (L)(L) connected in series and an angular velocity ω\omega is

Options

  1. AR/ωL\mathrm{R} / \omega \mathrm{L}
  2. BR/(R2+ω2L2)1/2\mathrm{R} /\left(\mathrm{R}^2+\omega^2 L^2\right)^{1 / 2}
  3. CωL/R\omega \mathrm{L} / \mathrm{R}
  4. DR/(R2−ω2L2)1/2R /\left(R^2-\omega^2 L^2\right)^{1 / 2}

Correct answer

B. R/(R2+ω2L2)1/2\mathrm{R} /\left(\mathrm{R}^2+\omega^2 L^2\right)^{1 / 2}

Step-by-step solution

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