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(A) The magnetic force on a charged particle is given by the formula $\vec{F} = q(\vec{v} 	imes \vec{B})$.For the force to be non-zero,the particle m

Vedclass · Accepted Answer

The particle is moving and the magnetic field is perpendicular to the velocity.

Vedclass · Answer

(A) The magnetic force on a charged particle is given by the formula $\vec{F} = q(\vec{v} 	imes \vec{B})$.For the force to be non-zero,the particle must be moving (i.e.,velocity $\vec{v} 
eq 0$) and the velocity must not be parallel to the magnetic field $\vec{B}$.If the particle is stationary,$\vec{v} = 0$,so $\vec{F} = 0$.If the velocity is parallel or anti-parallel to the magnetic field,the cross product $\vec{v} 	imes \vec{B} = 0$,so $\vec{F} = 0$.Therefore,for a magnetic force to exist,the particle must be moving,and the velocity vector must have a component perpendicular to the magnetic field vector.

$A$ charged particle experiences a magnetic force in the presence of a magnetic field. Which of the following statements is correct?

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