A charged particle moves through a magnetic field in a direction perpendicular to it. Then

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Velocity remains unchanged

Speed of the particle remains unchanged

Direction of the particle remains unchanged

Acceleration remains unchanged

answer is B.

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Detailed Solution

Magnetic force acts always in perpendicular direction to the velocity. So, the speed of the particle is not affected by the magnetic field. The magnetic force provides centripetal force to the particle. So, the direction of the particle changes continuously, which changes the velocity and acceleration.

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