The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will be halved when the angle between the velocity of the particle and the direction of the magnetic field changes from 25.0° to
A)50.0°.
B)12.5°.
C)57.7°.
D)12.2°.

Question

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The Answer of The magnetic force on a charged particle moving at a constant speed in a uniform magnetic field will be halved when the angle between the velocity of the particle and the direction of the magnetic field changes from 25.0° to
A)50.0°.
B)12.5°.
C)57.7°.
D)12.2°.

The Magnetic Force on a Charged Particle Moving at a Constant