Question

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

• A. Speed of the particle remains unchanged
• B. Direction of the particle remains unchanged
• C. Acceleration remains unchanged
• D. Velocity remains unchanged

Answer 1

Answer: (A)

Speed of the particle remains unchanged

Answer 2

When a charged particle moves through a magnetic field in a direction perpendicular to it, the particle's speed remains unchanged while its direction changes. This is because the magnetic field exerts a force on the charged particle, causing it to undergo circular motion due to the Lorenz force. In this circular motion, the particle's speed remains constant, but its velocity (direction of motion) continuously changes because it is directed perpendicular to the magnetic field lines.

So, the correct answer is (A): Speed of the particle remains unchanged.