A negative charge moving parallelto a 2 T magnetic field experienced a force of

Question

A negative charge moving parallelto a 2 T magnetic field experienced a force of 5N.

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

1 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.

N is not a unit offorce.

Themagnetic field must always be perpendicular to thevelocity.

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.

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.
1 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.

N is not a unit offorce.

Themagnetic field must always be perpendicular to thevelocity.

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.

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.
1 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.

N is not a unit offorce.

Themagnetic field must always be perpendicular to thevelocity.

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.

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.
1

Explanation / Answer

   F = qvBsin where is the angle between the velocity and the magneticfield. If the charge is moving parallel to the magnetic field thenthe angle between them is 0o, sin0o is 0, andthe force is 0 N.

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