A negative charge moving parallel to a 2 T magnetic fieldexperienced a force of

Question

A negative charge moving parallel to a 2 T magnetic fieldexperienced a force of 5 N.

Which one of the following best explains why the above statement isfalse?

1 F =qvBsin where is the angle betweenthe velocity and the magnetic field. If the charge is movingparallel to the magnetic field then the angle between them is0o, sin0o is 0, and the force is 0N.

W =(Fcos)s where is the angle betweenthe force and the velocity. If the charge is moving parallel to themagnetic field then the angle between the velocity & the forceis 90o and cos(90o) is 0. Thus no work isdone and as a result there must be no force on thecharge.
    
Negative charges can't have a magneticforce exerted on them because they aren't metals.

Magnetic fields make charges move incircles so the charge couldn't be moving in a straightline.

Themagnetic field must always be perpendicular to thevelocity.

N is not a unit offorce.

1 F =qvBsin where is the angle betweenthe velocity and the magnetic field. If the charge is movingparallel to the magnetic field then the angle between them is0o, sin0o is 0, and the force is 0N.

W =(Fcos)s where is the angle betweenthe force and the velocity. If the charge is moving parallel to themagnetic field then the angle between the velocity & the forceis 90o and cos(90o) is 0. Thus no work isdone and as a result there must be no force on thecharge.
    
Negative charges can't have a magneticforce exerted on them because they aren't metals.

Magnetic fields make charges move incircles so the charge couldn't be moving in a straightline.

Themagnetic field must always be perpendicular to thevelocity.

N is not a unit offorce.

1 F =qvBsin where is the angle betweenthe velocity and the magnetic field. If the charge is movingparallel to the magnetic field then the angle between them is0o, sin0o is 0, and the force is 0N.

W =(Fcos)s where is the angle betweenthe force and the velocity. If the charge is moving parallel to themagnetic field then the angle between the velocity & the forceis 90o and cos(90o) is 0. Thus no work isdone and as a result there must be no force on thecharge.
    
Negative charges can't have a magneticforce exerted on them because they aren't metals.

Magnetic fields make charges move incircles so the charge couldn't be moving in a straightline.

Themagnetic field must always be perpendicular to thevelocity.

N is not a unit offorce.

1

Explanation / Answer

F = qvBsinwhere is the angle between the velocity and themagnetic field. If the charge is moving parallel to the magneticfield then the angle between them is 0o,sin0o is 0, and the force is 0 N.

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