At an instant of time, a magnetic field is applied along the velocity of the particle. The acceleration produced in the particle will be
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Zero
Explanation:
The magnetic force on a charged particle is given by $F = q(\vec{v} \times \vec{B})$.
If $\vec{v}$ is parallel to $\vec{B}$, then $\vec{v} \times \vec{B} = 0$, hence the magnetic force and acceleration are both zero.