A square loop is carrying a steady current |EMIJEEMAIN2019

Competishun Header

JEE MAIN 2019

10-04-2019 S2

Question

A square loop is carrying a steady current I and the magnitude of its magnetic dipole moment is m. If this square loop is changed to a circular loop and it carries the same current, the magnitude of the magnetic dipole moment of circular loop will be :

Select the correct option:

A

$\frac{2 m}{\pi}$

B

$\frac{4 \mathrm{~m}}{\pi}$

C

$\frac{\mathrm{m}}{\pi}$

D

$\frac{3 m}{\pi}$

✓ 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

QJee Main 20242024

If $a=\sin ^{-1}(\sin (5))$ and $b=\cos ^{-1}(\cos (5))$, then $a^2+b^2$ is equal to

JEE MainMathematicsEasy

View Solution→

QJee Main 20242024

The number of solutions, of the equation $\mathrm{e}^{\sin x}-2 \mathrm{e}^{-\sin x}=2$ is

JEE MainMathematicsMedium

View Solution→

QJEE MAIN 20242024

Let $S_n$ denote the sum of the first $n$ terms of an arithmetic progression. If $S_{10}=390$ and the ratio of...

JEE MainMathematicsEasy

View Solution→

QJee Main 20242024

Consider the function $\mathrm{f}:(0, \infty) \rightarrow \mathrm{R}$ defined by $...

JEE MainMathematicsEasy

View Solution→

QJee Main 20242024

Let $\overrightarrow{\mathrm{OA}}=\overrightarrow{\mathrm{a}}, \overrightarrow{\mathrm{OB}}=12 \overrightarrow{\mathrm{a}}+4 \overrightarrow{\mathrm{~b}}$ and $\overrightarrow{\mathrm{OC}}=\overrightarrow{\mathrm{b}}$, where O is the origin. If $S$ is the parallelogram with adjacent sides...

JEE MainMathematicsMedium

View Solution→

QJee Main 20242024

If the function $\mathrm{f}:(-\infty,-1] \rightarrow(\mathrm{a}, \mathrm{b}]$ defined by $f(x)=e^{x 3-3 x+1}$ is one-one and onto, then the distance of the...

JEE MainMathematicsMedium

View Solution→

QJee Main 20242024

Let the mean and the variance of 6 observation $a, b, 68,44,48,60$ be 55 and 194 , respectively if $a>b$,...

JEE MainMathematicsMedium

View Solution→

QJee Main 20242024

The sum of the solutions $x \in \mathbb{R}$ of the equation $...

JEE MainMathematicsHard

View Solution→

QJee Main 20242024

\text { The area of the region enclosed by the parabola } y=4 x-x^2 \text { and } 3 y=(x-4)^2...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The current flowing through the $1 \Omega$ resistor is $\frac{n}{10}$ A. The value of $n$ is

JEE MainPhysicsHard

View Solution→

QJEE MAIN 20242024

Consider a $\triangle \mathrm{ABC}$ where $\mathrm{A}(1,2,3), \mathrm{B}(-2,8,0)$ and $\mathrm{C}(3,6,7)$. If the angle bisector of $\angle \mathrm{BAC}$ meets the line $...

JEE MainMathematicsEasy

View Solution→

QJee Main 20242024

Let $\mathrm{f}: \rightarrow \mathrm{R} \rightarrow(0, \infty)$ be strictly increasing function such that $\lim _{\substack{x \rightarrow \infty \\ f(x)}} \frac{f(7 x)}{2}=1$....

JEE MainMathematicsEasy

View Solution→

QJee Main 20242024

Let $r$ and $\theta$ respectively be the modulus and amplitude of the complex number $z=2-i\left(2 \tan \frac{5 \pi}{8}\right)$, then $...

JEE MainMathematicsMedium

View Solution→

QJEE MAIN 20242024

Let $P$ and $Q$ be the points on the line $\frac{x+3}{8}=\frac{y-4}{2}=\frac{z+1}{2}$ which are at a distance of 6 units from...

JEE MainMathematicsEasy

View Solution→

QJEE Main 20242024

The position, velocity and acceleration of a particle executing simple harmonic motion are found to have magnitudes of $...

JEE MainPhysicsMedium

View Solution→

QJEE Main 20242024

A charge q is placed at the center of one of the surface of a cube. The flux linked with...

JEE MainPhysicsEasy

View Solution→

Q Jee Main 20242024

Let $2^{\text {nd }}, 8^{\text {th }}$ and $44^{\text {th }}$, terms of a non-constant A.P. be respectively the $...

JEE MainMathematicsEasy

View Solution→

Q JEE Main 20242024

When a coil is connected across a 20 V dc supply, it draws a current of 5 A . When...

JEE MainPhysicsHard

View Solution→