A particle is relocating parallel to a uniform magnetic field. I m sorry of the adhering to statements are true?


Explanation:

The pressure experienced through a charged bit in a magnetic field is 

*

This method that once a charge fragment is moving perpendicular come the field, due to the cross-product, it experience the most amount of force (because 

*
 is equal to 
*
, and theta equates to
*
 when it"s perpendicular). This method that the charged particle will suffer no force because of the magnetic ar when it"s parallel. We know there will certainly be no pressure on the particle, and also we additionally know that uncharged particles endure no force in magnetic fields, however we can"t to speak for particular the particle has actually no network charge, only being told that it"s moving parallel to the field.

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Example inquiry #8 : Magnetic pressure


 

*

 


A rail device is formed in a magnetic ar directed the end of the web page as diagrammed above. The rod continues to be in contact with the rails through zero friction as it moves to the best at a consistent velocity of 

*
 due come an exterior force. The street from one rail to the various other is 0.087m. The rails and the rod have actually no resistance, yet the resistor has a resistance of 0.0055 Ohms. The magnetic field has a magnitude of 0.035T. What is the magnitude and direction of the external force required to keep the rod relocating at a consistent velocity?


Possible Answers:

*
 to the left


 to the right


*
 to the right


*
 to the left


No pressure is necessary due to the fact that the pole is relocating at a continuous velocity


Correct answer:

 to the right


Explanation:

The stick acts as a battery due to its movement in the magnetic field: 

*
. Since there is a close up door circuit, this outcomes in current flow:

*

In this an easy circuit, the existing is the same everywhere, so the same current flows through the rod. Because of this current, the rod feels a force:

*

By the right-hand rule, this magnetic pressure is directed to the left, therefore the exterior force must be directed to the right. The is exciting to note that the strength dissipated in the resistor:

*
 is the same as the power listed by the external force:

*

The universe conspires to maintain energy.


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Example concern #9 : Magnetic pressure


If a 10C charged fragment is traveling perpendicularly to a magnetic ar of 5T at a rate of 

*
, what is the pressure experienced through this fee particle?


Possible Answers:

*



*


*


Correct answer:


Explanation:

This question is presenting us v a script in i beg your pardon a charged bit is traveling with a specific velocity through a magnetic field. In this situation, we"re being asked to recognize what the force experienced by this particle is.

To deal with this question, we"ll require to recognize what type of pressure this particle is likely to experience. Since we"re told that the bit is traveling in a magnetic field, it would certainly make sense that this particle is going to be impacted by a magnetic force. Thus, we"ll need to use the equation because that magnetic force.

*

Moreover, since we"re told in the concern stem that this bit is traveling perpendicularly to the magnetic field, we understand that 

*
 and thus 
*
. This helps alleviate the equation down.

*

Now, every we have to do is plugin the values offered to united state in order to calculate the resulting force.

*

*


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Example concern #1 : Magnetic pressure


A fee particle, Q, is traveling follow me a magnetic field, B, with rate v. What is the size of the pressure the bit experiences?


Possible Answers:

Zero


Correct answer:

Zero


Explanation:

Charged particles just experience a magnetic force when part component of their velocity is perpendicular to the magnetic field. Here, the velocity is parallel to the magnetic ar so the fragment does not experience a force. 


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Example concern #21 : Magnetism and Electromagnetism


Mass that electron:

*


An electron beginning a magnetic ar at velocity

*
and experiences a pressure of
*
. Recognize the magnetic field.


Possible Answers:
Correct answer:

*


Explanation:

Use the magnetic pressure equation:

*

Plug in recognized values and also solve for 

*

*

*


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Example inquiry #671 : Ap Physics 2


*

What direction of pressure would a an unfavorable charge in ~ location 

*
relocating left experience as result of the magnetic field?


Possible Answers:

Up


Out of the screen


To the left


Down, towards the bottom the the screen


Into the screen


Correct answer:

Down, towards the bottom that the screen


Explanation:

Using the ideal hand preeminence for a existing carrying wire mirrors that the magnetic ar is stating of the screen. Making use of the ideal hand ascendancy for magnetic force on a negative charged fragment shows the force acting downward.


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Example question #23 : Magnetism and Electromagnetism


Which the the following conditions is not needed in order for a particle to suffer a magnetic force?


Possible Answers:

The particle need to be of a particular size


There must be a current


The particle should be moving in a direction the is no parallel or antiparallel come the direction the an external magnetic field


All of these problems are necessary for a magnetic force to action on a particle


The bit must have actually a charge


Correct answer:

The particle have to be the a certain size


Explanation:

In this question, we"re asked to determine which answer choice falsely to represent a necessary problem for a magnetic force to act on a particle.

To prize this, that is beneficial to look at the equation because that magnetic force.

*

What this equation mirrors is that the magnetic pressure on a particle is dependent upon that particle"s charge, its velocity, and also on the stamin of the magnetic field. Already we can dominion out a couple of of the answer choices.

Additionally, this equation also shows that 

*
 cannot be equal to zero. What this method is that the particle"s direction of motion cannot be along the magnetic field lines. In other words, the particle cannot be travel in a direction that is parallel or antiparallel through the magnetic field.

Lastly, we can see the no where in the over equation is over there a variable for the dimension of the particle. Thus, dimension is no a requirement for a fragment to suffer a magnetic force.


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Example question #22 : Magnetism and Electromagnetism


Two electrons room traveling parallel to each various other

*
 apart. The distance between them is perpendicular to your motion. Among them is on a track that avoids it from moving side to side. The other one is able to movie in all directions. At what velocity would certainly the magnetic attractive pressure equal the repulsive electric force?


Possible Answers:

None that these


Correct answer:

*


Explanation:

Using

*
 

*

*

Where

*
 is the charge minimal to traveling in a single dimension

*
 is the cost-free charge

*
 is the distance in between the charges

*
 is the velocity of the first charge

*
 is the velocity of the 2nd charge

*
 is the worth of the an initial charge

*
 is the value of the second charge

*
 and 
*
 are identical as the charges room running parallel to each other

*

Combining equations:

*

*

Solving for 

*

*

Plugging in values:

*

*


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Example concern #25 : Magnetism and Electromagnetism


A proton is traveling parallel to a wire in the very same direction together the traditional current. The proton is travel at

*
. The current in the wire is
*
. The proton and also the wire space
*
 apart. Identify the magnetic pressure on the proton.


Possible Answers:

None that these


Correct answer:

*


Explanation:

Finding the magnetic field at the ar of the proton.

*

Converting 

*
 to 
*
 and plugging in values

*

*

Using

*

*

*


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Example inquiry #11 : Magnetic force


A circuit includes a 

*
 battery and a 
*
 resistor in series. Identify the magnitude of the magnetic force outside of the loop 
*
 away indigenous the wire on an electron the is stationary.


Possible Answers:

None that these


Correct answer:

None of these


Explanation:

Since the electron is stationary, there will be no magnetic force, together magnetic force requires the particle to be both charged and also to it is in moving.

See more: Spanish Interrogatives Worksheet S & Teaching Resources, Spanish Interrogatives


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