Five equal-mass particles (a–e enter a region of uniform magnetic field directed into the page. they follow the trajectories illustrated in (figure 1 . part a which particle (if any is neutral?

Particle D is neutral

Magnetic fields can be generated by:

The charge of a moving electron experiences a magnetic force.

The magnetic force (Lorentz) acting on a charge moving in a magnetic field is:

F = magnetic force, N

B = magnetic induction, Wb / m²

i = electric current, A

l = length of conductor, m

α = angle between current and magnetic field

The path traveled by the charge over time is proportional to velocity (v = l / t), while the current I = q/t

so the magnetic force equation becomes

If we look at the picture, the particle enters the magnetic field perpendicularly so that the magnetic force functions as a centripetal force

F = Bqv sin 90 = m.ac (ac = centripetal acceleration)

From this equation shows that the radius of the path of a particle is proportional to its linear velocity

From the picture also shows that particle D is not deflected in a magnetic field, so that the path moves straight, so the magnetic force = 0, can also show neutral charged particles because there is no magnetic force acting on it

the average velocity

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resultant velocity

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velocity position

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Keywords: Centripetal force, linear velocity,  magnetic force, Lorentz

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

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