posted by mm. on .
Gold ions (Au+) are accelerate to high speeds using electric fields.
These ions are then passed through a region where uniform electric E and magnetic B fields are present.
If the ions are traveling to the right, which configuration of E and B will serve as a velocity selector?
A. Electric field E up; Magnetic field B into the page
B. Electric field E down; Magnetic field B out of the page
C. Electric field E up; Magnetic field B out of the page
D. Electric field E down; Magnetic field B into the page
E. Both A and B
F. Both C and D
G. All of the above