A uniform magnetic field is directed into the page. Because of the presence of a

Question

A uniform magnetic field is directed into the page. Because of the presence of a tenuous gas in the region, a charged particle moving in the plane of the page follows an anti-clockwise spiral of decreasing radius as shown.

Give all possible correct answers (i.e., B, AC, BCD...).

A) The charge is slowing down.

B) The magnitude of the momentum of the particle is increasing.

C) The magnetic force is doing non-zero work on the charge.

D) The charge is positive.

E) The acceleration vector of the particle is constant.

Explanation / Answer

ACDE

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