A charged particle moving along $+{x}$ direction with velocity ${v}$ enters a region where there is a uniform magnetic field $\vec{B}=-B \hat{k}$ from $x=0$ to $x=d$, the particle gets deflected at an angle $\theta$ from its intial path. The specific charge of the particle is :

NEET UG PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

1 Hard

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Application +4 | -1

A charged particle moving along

+{x}

direction with velocity

{v}

enters a region where there is a uniform magnetic field

\vec{B}=-B \hat{k}

from

x=0

x=d

, the particle gets deflected at an angle

\theta

from its intial path. The specific charge of the particle is :

View answer and explanation

Correct option: D

\frac{{V} \sin \theta}{{Bd}}

Option D (

\frac{1}{3} \pi q f l^2

) is correct because the magnetic moment is calculated by integrating the current due to each infinitesimal charge element along the rod.

Practice All Chapter MCQs →

5 \mathrm{~cm}

12 \mathrm{~cm}

250 \mu \mathrm{T}

d \vec{B}

d \vec{l}

\vec{r}

i

\oint {\overrightarrow B .\overrightarrow {dl} }