1. At an instant in time a negatively charged particle is moving
in a direction that is 45 degrees counter clockwise from the
positive y-axis and a magnetic field points in the positive
y-direction
A. negative z-direction
B. x-direction
C. parallel to the magnetic field
D. positive z-direction
2. A charged particle enters a chamber with a uniform
magnetic field pointing in the x-direction. If the charged particle
initially moves at an angle of 30 degrees with respect to the
magnetic field, what type of trajectory will the particle take.
A. straight line
B. sinusoidal
C. helical
D. circular