1. Permanent magnets create magnetic fields. Outside of a magnet, the magnetic field lines:

a) Go from the north pole to the south pole

b) Go from the south pole out to infinity

c) Go from the south pole to the north pole

d) Go from the north pole out to infinity

2. The needle of a compass is a permanent magnet that will rotate so that its north pole faces north. This indicates that the Earth itself is:

a) A magnet with its south pole to the north

b) Negatively charged

c) A magnet with its north pole to the north

d) Positively charged

3. A positively charged particle is stationary at a location of non-zero magnetic field. The magnetic force it feels will be:

a) Of zero magnitude

b) In the direction of the magnetic field

c) Against the direction of the magnetic field

d) At right angles to the magnetic field

4. A charged particle moving in a constant magnetic field, whose velocity is neither parallel nor perpendicular to the field, will have a trajectory shaped as a:

a) Helix

b) Parabola

c) Straight line

d) Circle

5. A particle moving with a velocity perpendicular to a uniform magnetic field will move in a circular trajectory. The radius of this trajectory will depend on the magnetic field strength and the particle's:

a) Charge alone

b) All three of charge, mass, and speed

c) Speed alone

d) Mass alone