A.C. source of angular| Alternating Current | JEE MAIN_2026

Competishun Header

JEE MAIN_2026

05-04-26_S1

Question

An a.c. source of angular frequency $\omega$ is connected across a resistor R and a capacitor C in series. The current is observed as I . Now the frequency of the source is changed to $\omega / 4$, (keeping the voltage unchanged) the current is found to be $I / 3$. The ratio of resistance to reactance at frequency $\omega$ is

Select the correct option:

A

$\sqrt{\frac{6}{7}}$

B

$\sqrt{\frac{3}{5}}$

C

$\sqrt{\frac{7}{8}}$

D

$\sqrt{\frac{3}{4}}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Medium

Start Preparing for JEE with Competishun

Filters 0

Showing 18 questions

In the given circuit below inductance values of $L_1, L_2$ and $L_3$ are same. The magnetic energy stored in the...

JEE MainPhysicsMedium

View Solution→

The charged particle moving in a uniform magnetic field of $(3 \hat{i}+2 \hat{j}) \mathrm{T}$ has an acceleration $...

JEE MainPhysicsEasy

View Solution→

A transverse wave on a string is described by $y=3 \sin (36 t+0.018 x+\pi / 4)$. where $x, y$ are...

JEE MainPhysicsMedium

View Solution→

From 18 m height above the ground a ball is dropped from rest. The height above the ground at which...

JEE MainPhysicsEasy

View Solution→

A cube has side length 5 cm and modulus of rigidity $10^5 \mathrm{~N} / \mathrm{m}^2$. The displacement produced by a...

JEE MainPhysicsEasy

View Solution→

For the given logic circuit, which of the following inputs combination will make both LED-1 and LED-2 to glow?

JEE MainPhysicsHard

View Solution→

An a.c. source of angular frequency $\omega$ is connected across a resistor R and a capacitor C in series. The...

JEE MainPhysicsMedium

View Solution→

Two wires as shown in the figure below, made of steel and have breaking stress of $...

JEE MainPhysicsMedium

View Solution→

A compound microscope is designed with two symmetric biconvex lenses. The objective lens is cut vertically, creating two identical plano-convex...

JEE MainPhysicsMedium

View Solution→

Light source having wavelength 331 nm is used to generate photo-electrons whose stopping potential is 0.2 V . The work...

JEE MainPhysicsEasy

View Solution→

A ray of light passing through an equilateral prism is having velocity $2.12 \times 10^8 \mathrm{~m} / \mathrm{s}$ in the...

JEE MainPhysicsEasy

View Solution→

In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is $2.4 \mu \mathrm{~m}$....

JEE MainPhysicsEasy

View Solution→

Refer to the figure given below, current between terminals A and B is $\_\_\_\_$ A.

JEE MainPhysicsMedium

View Solution→

A displacement current of 4.0 A can be set up in the space between two parallel plates of $...

JEE MainPhysicsEasy

View Solution→

In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit (f). The...

JEE MainPhysicsMedium

View Solution→

QJEE Mains 20262026

5.33 g of $\mathrm{CrCl}_3 \cdot 6 \mathrm{H}_2 \mathrm{O}$, which is a $1: 3$ electrolyte, is dissolved in water and is...

JEE MainChemistryMedium

View Solution→

An electron of mass m is moving in an electric field $\vec{E}=-2 E_{\mathrm{o}} \hat{i}\left(\mathrm{E}_0=\right.$ constant $\left.>0\right)$, with an initial velocity...

JEE MainPhysicsMedium

View Solution→

Refer to the figure given below. The values of $\mathrm{I}_1, \mathrm{I}_2$ and $\mathrm{I}_3$ are $\_\_\_\_$ .

JEE MainPhysicsHard

View Solution→