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Chapter 4: Q1DQ (page 911)

Can a charged particle move through a magnetic field without experiencing any force? If so, how? If not, why not?

Short Answer

Expert verified

Yes, a charged particle can move through a magnetic field without experiencing any force

Step by step solution

01

Magnetic field

Magnetic field is the region around a magnet or an electro magnet or a moving electric charge within which the forces of magnetism acts upon. It has both magnitude and direction

02

Forces acting on the particle will be zero

We know that the magnetic forces on a particle of charge q which is moving with a velocity v is given by:

F=qv→×B→

=qvBsinθ,

where,θis the angle betweenv→ andB→.

Hence if the particle is moving parallel or anti parallel to the direction of the magnetic field then the magnetic force acting on the particle will be zero.

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Most popular questions from this chapter

A 1.50-mcylindrical rod of diameter 0.500cmis connected to

a power supply that maintains a constant potential difference of 15.0Vacross

its ends, while an ammeter measures the current through it. You observe that

at room temperature (20.0∘C)the ammeter reads 18.5Awhile at 92.0∘Cit

reads 17.2A. You can ignore any thermal expansion of the rod. Find (a) the

resistivity at and (b) the temperature coefficient of resistivity at for the material of the rod.

Light Bulbs in Series and in Parallel. Two light bulbs have constant resistances of 400Ωand 800Ω. If the two light bulbs are connected in series across a 120Vline, find (a) the current through each bulb; (b) the power dissipated in each bulb; (c) the total power dissipated in both bulbs. The two light bulbs are now connected in parallel across the120Vline. Find (d) the current through each bulb; (e) the power dissipated in each bulb; (f) the total power dissipated in both bulbs. (g) In each situation, which of the two bulbs glows the brightest? (h) In which situation is there a greater total light output from both bulbs combined?

Why does an electric light bulb nearly always burn out just as you turn on the light, almost never while the light is shining?

BIO The average bulk resistivity of the human body (apart from surface resistance of the skin) is about 5.0Ω·m. The conducting path between the hands can be represented approximately as a cylinder 1.6 m long and 0.10 m in diameter. The skin resistance can be made negligible bysoaking the hands in salt water. (a) What is the resistance between the hands if the skin resistance is negligible? (b) What potential difference between thehands is needed for a lethal shock current of 100 mA ? (Note that your result shows that small potential differences produce dangerous currents when the skin is damp.) (c) With the current in part (b),what power is dissipated in the body?

A particle with charge-5.60nCis moving in a uniform magnetic fieldrole="math" localid="1655717557369" B=-(1.25T)k^

The magnetic force on the particle is measured to berole="math" localid="1655717706597" F⇀=-(3.40×10-7N)i^-(7.40×10-7N)j^ (a) Calculate all the components of the velocity of the particle that you can from this information. (b) Are there
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