The track ABC in the figure is a reproduction of the path of a charged particle in a cloud chamber. If the magnetic field is perpendicular to this sheet of paper and directed into the paper, the particle
A) has a positive charge and has moved from C to A.
B) has a negative charge and has moved from C to A.
C) has a positive charge and has moved from A to C.
D) has a negative charge and has moved from A to C.
E) is an alpha particle.

Question

The track ABC in the figure is a reproduction of the path of a charged particle in a cloud chamber. If the magnetic field is perpendicular to this sheet of paper and directed into the paper, the particle
A) has a positive charge and has moved from C to A. 
B) has a negative charge and has moved from C to A. 
C) has a positive charge and has moved from A to C. 
D) has a negative charge and has moved from A to C. 
E) is an alpha particle.

Quizplus · Accepted Answer

The Answer of  The track ABC in the figure is a reproduction of the path of a charged particle in a cloud chamber. If the magnetic field is perpendicular to this sheet of paper and directed into the paper, the particle
A) has a positive charge and has moved from C to A. 
B) has a negative charge and has moved from C to A. 
C) has a positive charge and has moved from A to C. 
D) has a negative charge and has moved from A to C. 
E) is an alpha particle.

The Track ABC in the Figure Is a Reproduction of the Path