The picture above shows the paths followed by four charged particles as the move through a rectangular region of uniform magnetic field. The field inside the rectangle is directed out of the screen. There is no field outside the rectangle. Which of the four particles has a positive charge?
(1) particle 1
(2) particle 2
(3) particle 3
(4) particle 4
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The picture above shows the paths followed by four charged particles as the move through a rectangul...
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