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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?

Short Answer

Expert verified

Hence, we cannot necessarily say that the force field is zero in this region.

Step by step solution

01

Definition of Magnetic field.

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field.

02

Explanation of solution.

No, we cannot say that the force field is zero therein region because there could also be some force field and magnetic flux in this region exerting electric force on the charge in such the simplest way that the attractive force is canceled out by the electrical force on the charge

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Most popular questions from this chapter

(a) A DC power line for a light-rail system carries1000Aat an angle of30.0掳to the Earth鈥檚 5.00脳10-5-Tfield. What is the force on a10鈥�m section of this line? (b) Discuss practical concerns this presents, if any.

(a) A pendulum is set up so that its bob (a thin copper disk) swings between the poles of a permanent magnet as shown in Figure 22.63. What is the magnitude and direction of the magnetic force on the bob at the lowest point in its path, if it has a positive0.250渭颁charge and is released from a height of 30.0 cmabove its lowest point? The magnetic field strength is 1.50 T (b) What is the acceleration of the bob at the bottom of its swing if its mass isgrams and it is hung from a flexible string? Be certain to include a free-body diagram as part of your analysis.

Using information in Example20.6, what would the Hall voltage be if a 2.00鈥�Tfield is applied across a gauge copper wire (2.588mm in diameter) carrying a 20.0鈥�Acurrent?

How far from the starter cable of a car, carrying 150 A, must you be to experience a field less than the Earth鈥檚5.00脳10-5T ? Assume a long straight wire carries the current. (In practice, the body of your car shields the dashboard compass.)

A surveyor\({\rm{100 m}}\)from a long straight\({\rm{200}}\;{\rm{kV}}\)DC power line suspects that its magnetic field may equal that of the Earth and affect compass readings. (a) Calculate the current in the wire needed to create a\({\rm{5}}{\rm{.00 \times 1}}{{\rm{0}}^{{\rm{ - 5}}}}{\rm{ T}}\)field at this distance. (b) What is unreasonable about this result? (c) Which assumption or premise is responsible?
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