An inductor of inductance L and resistor of resistance R are joined in series and connected by a source of emf V and frequency $\mathrm{\omega }.$ Power dissipated in the circuit is

• A

  $\frac{\left({\mathrm{R}}^2+{\mathrm{\omega }}^2{\mathrm{L}}^2\right)}{\mathrm{V}}$

• B

  $\frac{{\mathrm{V}}^2\mathrm{R}}{\left({\mathrm{R}}^2+{\mathrm{\omega }}^2{\mathrm{L}}^2\right)}$

• C

  $\overline{\left({\mathrm{R}}^2+{\mathrm{\omega }}^2{\mathrm{L}}^2\right)}$

• D

  $\frac{\sqrt{{\mathrm{R}}^2+{\mathrm{\omega }}^2{\mathrm{L}}^2}}{{\mathrm{V}}^2}$