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JEE Main 2026 (21 Jan, Shift 1) · Moving Charge in a Magnetic Field

Moving Charge in a Magnetic Field question from JEE Main 2026 (21 Jan, Shift 1)

Q3JEE Main 2026 · 21 JAN · SHIFT 1Easy

Moving Charge in a Magnetic Field

A current carrying solenoid is placed vertically and a particle of mass $m$ with charge $Q$ is released from rest. The particle moves along the axis of solenoid. If $g$ is acceleration due to gravity then the acceleration (a) of the charged particle will satisfy:

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Answer: (d)

Inside the vertical solenoid $\vec{B}$ is along the axis (vertical).
The particle moves along the axis, so $\vec{v} \parallel \vec{B}$ and magnetic force is zero.
Only gravity acts, so $a = g$ .
So the answer is (d) $a = g$ .

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