Chapter 22: Q6CQ (page 808)
If a charged particle moves in a straight line through some region of space, can you say that the magnetic field in that region is necessarily zero?
Hence, we cannot necessarily say that the force field is zero in this region.
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Is the Earthโs magnetic field parallel to the ground at all locations? If not, where is it parallel to the surface? Is its strength the same at all locations? If not, where is it greatest?
What is the direction of the velocity of a negative charge that experiences the magnetic force shown in each of the three cases in Figure
(a) Aircraft sometimes acquire small static charges. Suppose a supersonic jet has a
Consider a mass separator that applies a magnetic field perpendicular to the velocity of ions and separates the ions based on the radius of curvature of their paths in the field. Construct a problem in which you calculate the magnetic field strength needed to separate two ions that differ in mass, but not charge, and have the same initial velocity. Among the things to consider are the types of ions, the velocities they can be given before entering the magnetic field, and a reasonable value for the radius of curvature of the paths they follow. In addition, calculate the separation distance between the ions at the point where they are detected.
Is the force attractive or repulsive between the hot and neutral lines hung from power poles? Why?
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