New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Magnetics question

2024 · 27 Jan · Shift 2 · Q87

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Physics
Magnetics
2024 · 27 Jan · Shift 2 · Q87

Magnetics question

2024 · 27 Jan · Shift 2 · Q87

JEE MainPhysicsMagneticsNumerical+4 / −1

The magnetic field at the centre of a wire loop formed by two semicircular wires of radii

R_1=2 \pi \mathrm{m}

and

R_2=4 \pi \mathrm{m}

, carrying current

\mathrm{I}=4 \mathrm{~A}

as per figure given below is

\alpha \times 10^{-7} \mathrm{~T}

. The value of

\alpha

is

\underline{\hspace{2cm}}

. (Centre

\mathrm{O}

is common for all segments) JEE Main 2024 (Online) 27th January Evening Shift Physics - Magnetic Effect of Current Question 49 English

JEE Main 2024 (Online) 27th January Evening Shift Physics - Magnetic Effect of Current Question 49 English

Numerical answer

More from Magnetics

Two particles $X$ and $Y$ having equal charges are being accelerated through the same potential difference. Thereafter they enter normally in a region of uniform magnetic field and describes circular paths of radii $R_{1}$ and $R_{2}$ …2024 · MCQ
A charge of $4.0 μ C$ is moving with a velocity of $4.0 \times 1 0^{6} ms^{- 1}$ along the positive $y$ axis under a magnetic field $B$ of strength $(2 \hat{k}) T$ . The force acting on the charge is $x \hat{i} N$ …2024 · Numerical
Two insulated circular loop A and B of radius ' $a$ ' carrying a current of ' $I$ ' in the anti clockwise direction as shown in the figure. The magnitude of the magnetic induction at the centre will be : Includes diagram2024 · MCQ
The current of $5 A$ flows in a square loop of sides $1 m$ is placed in air. The magnetic field at the centre of the loop is $X 2 \times 1 0^{- 7} T$ . The value of $X$ is .2024 · Numerical
A rigid wire consists of a semicircular portion of radius $R$ and two straight sections. The wire is partially immerged in a perpendicular magnetic field $B = B_{0} \hat{k}$ as shown in figure. The magnetic force on the wire if it has a… Includes diagram2024 · MCQ
An electron moves through a uniform magnetic field $B = B_{0} \hat{i} + 2 B_{0} \hat{j} T$ . At a particular instant of time, the velocity of electron is $u = 3 \hat{i} + 5 \hat{j} m / s$ . If the magnetic force acting…2024 · Numerical
A uniform magnetic field of $2 \times 1 0^{- 3} T$ acts along positive $Y$ -direction. A rectangular loop of sides $20 cm$ and $10 cm$ with current of $5 A$ is in $Y - Z$ plane. The current is in…2024 · MCQ
Two circular coils $P$ and $Q$ of 100 turns each have same radius of $π cm$ . The currents in $P$ and $2 A$ are $1 A$ and $Q$ respectively. $P$ and $Q$ are placed with their planes mutually perpendicular with their centers…2024 · Numerical