   Chapter 19.3, Problem 19.1QQ

Chapter
Section
Textbook Problem

A charged particle moves in a straight line through a region of space. Which of the following answers must be true? (Assume any other fields are negligible.) The magnetic field (a) has a magnitude of zero (b) has a zero component perpendicular to the particle’s velocity (c) hits a zero component parallel to the particle’s velocity in that region.

(a)

To determine

Whether the statement is true or false.

Explanation

The magnetic force on a charged particle is defined as,

F=qvBsinθ

The component of the magnetic field perpendicular to the direction of velocity of the particle is.

B=Bsinθ

Hence the force on a charged particle is,

F=q

(b)

To determine

Whether the statement is true or false.

c)

To determine

Whether the statement is true or false.

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