A uniform magnetic field is directed into the page. A charged particle moving in

Question

A uniform magnetic field is directed into the page. A charged particle moving in the plane of the page follows an anti-clockwise spiral of decreasing radius as shown.

            (True/False) The charge is speeding up.          
            (True/False) The charge is slowing down.          
            (True/False) The charge is positive.          
            (True/False) The magnetic force is doing work on the charge.          
            (True/False) The charge is negative.          

A uniform magnetic field is directed into the page. A charged particle moving in the plane of the page follows an anti-clockwise spiral of decreasing radius as shown. (True/False) The charge is speeding up. (True/False) The charge is slowing down. (True/False) The charge is positive. (True/False) The magnetic force is doing work on the charge. (True/False) The charge is negative.

Explanation / Answer

True/False) The charge is speeding up.----------false
(True/False) The charge is slowing down.--------true
(True/False) The charge is positive.---------------true
(True/False) The magnetic force is doing work on the charge.-----true
(True/False) The charge is negative.-------false

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