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  4. The figure shows two regions of uniform magnetic fields of strengths B and 2B . A charged particle of mass m and charge q enters the region of the magnetic field with a velocity v=(qBw/m) , where w is the width of each region of the magnetic field. The time taken by the particle to come out of the region of the magnetic field is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-65ocxgfhzcz2.png />

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Q. The figure shows two regions of uniform magnetic fields of strengths $B$ and $2B$ . A charged particle of mass $m$ and charge $q$ enters the region of the magnetic field with a velocity $v=\frac{qBw}{m}$ , where $w$ is the width of each region of the magnetic field. The time taken by the particle to come out of the region of the magnetic field is

Question

NTA AbhyasNTA Abhyas 2020Moving Charges and Magnetism

Solution:

$\text{Time} = \frac{\pi \text{m}}{2 \text{qB}} + \frac{\pi \text{m}}{2 \text{qB}} = \frac{\pi \text{m}}{qB}$
Solution