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Five equal-mass particles (A–E) enter aregion of uniform magnetic field directed

ID: 1740415 • Letter: F

Question

Five equal-mass particles (A–E) enter aregion of uniform magnetic field directed into the page. Theyfollow the trajectories illustrated in the figure.

Click below to see image:
Figure1

Rank the particles A, B, C, and E on the basis of theirspeed. Rank from largest to smallest. Torank items as equivalent, overlap them. Five equal-mass particles (A–E) enter aregion of uniform magnetic field directed into the page. Theyfollow the trajectories illustrated in the figure.

Click below to see image:
Figure1

Rank the particles A, B, C, and E on the basis of theirspeed. Rank from largest to smallest. Torank items as equivalent, overlap them.

Explanation / Answer

   Radius of path of a charged particle in amagnetic field is given by    r   =   m * v/ B * q    i.e. greater is the radius, greater is thevelocity.    Hence         A> B > C,E