MCQ
In the given figure, the current amplitude is
  • $\sqrt {\frac{{5V_0^2}}{{4\left( {{\omega ^2}{L^2} + {R^2}} \right)}}} $
  • B
    $\frac{{{v_0}}}{{\sqrt {4\left( {{\omega ^2}{L^2} + {R^2}} \right)} }}$
  • C
    $\frac{{\sqrt 5 {v_0}}}{{2\sqrt {{\omega ^2}{L^2} - {R^2}} }}$
  • D
    $\frac{{\sqrt 5 {v_0}}}{{2\sqrt {{R^2} - {\omega ^2}{L^2}} }}$

Answer

Correct option: A.
$\sqrt {\frac{{5V_0^2}}{{4\left( {{\omega ^2}{L^2} + {R^2}} \right)}}} $
a
$V_{e q}=\sqrt{V_{0}^{2}+\left(\frac{V_{0}}{2}\right)^{2}}$

$\mathrm{R}_{\mathrm{eq}}=\sqrt{(\omega \mathrm{L})^{2}+\mathrm{R}^{2}}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Two solenoids have identical geometrical construction and same number of truns but  one is made of thick wire and other of thin wire. Which of the following quantities are  different for two solenoids :- 
$(a)$ Self inductance.
$(b)$ Rate of joule heating if the same current goes through them.
$(c)$ Magnetic potential energy if the same current goes through them .
$(d)$ Time constant.
A charge of 5 C is given a displacement of 0.5 m. The work done in the process is 10 J. The potential difference between the two points will be
The focal lengths of the objective and the eye piece of a compound microscope are $1\,cm$ and $5\,cm$ respectively. An object is placed at a distance of $1.1\,cm$ from the objective. If the final image is formed at infinity, the magnifying power of lenses are given by
To remove the chromatic aberration, the combination of lenses should be such that
GaAs is
$A$ fish rising vertically at the rate of $3\, m/s$, to the surface of water observed a bird above the water, diving vertically towards at the rate of $9\, m/s$. The ref. index of water is $4/3$. Calculate the actual velocity (velocity $w.r.t$ ground) of bird.......$m/s$
A nuclear reaction with positive $Q$ value is:
The size of an atom is of the order of
For a concave mirror, if real image is formed the graph between $\frac{1}{u}$ and $\frac{1}{v}$ is of the form
In a Young’s double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, number of fringes observed in the same segment of the screen is given by