Physics : asked on millerbe1228
 05.09.2022

Identify the electromagnets with poles that are reversed from the electromagnet shown above

. 3

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18.10.2022, solved by verified expert
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Options:
A.
B.
C.

Answer:
C.

Explanation:
From the attached image, in the electromagnet above the 3, we can see that the positive terminal comes before the negative terminal at the bottom left.
Now, when it is reversed, they will both move to the bottom right but their position will change with the negative coming before the positive.
- Also, the electric current arrow inside the circle points in the north west direction but when it is reversed, it will point in the north east direction.
- Also, the winded coil over the pole remains the same.
Thus, the only option that fulfills this reversed positions is the 3rd electromagnet
Identify the electromagnets with poles that are, №15241194, 05.09.2022 17:16
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Faq

Physics
Step-by-step answer
P Answered by Master

I think it is the third one

Explanation:

Everything about it is flipped

Physics
Step-by-step answer
P Answered by PhD

We've attached a picture of the 3 electromagnets options below the main electromagnet.

Answer:

The third electromagnet is correct.

Explanation:

From the attached image, in the electromagnet above the 3, we can see that the positive terminal comes before the negative terminal at the bottom left.

Now, when it is reversed, they will both move to the bottom right but their position will change with the negative coming before the positive.

Also, the electric current arrow inside the circle points in the north west direction but when it is reversed, it will point in the north east direction.

Also, the winded coil over the pole remains the same.

Thus, the only option that fulfills this reversed positions is the 3rd electromagnet

We've attached a picture of the 3 electromagnets options below the main electromagnet.Answer:The thi
English
Step-by-step answer
P Answered by Master

1. Is B. 1.5 to 2.2


2. Is A. High-speed CAN


3. Is B. Energy Storage device


4. Is C. Allow reverse current to flow


5. Is B. Transistor


7. Is C. Farad


11. Is D. 0 and 7V


12. Is C. Both A and B


13. Is A. The wire is connected between two grounds


14. Is D. A lower current circuit controls a higher current circuit


15 is B. Powertrain control module


The others I don't know good luck

English
Step-by-step answer
P Answered by Specialist

1. Is B. 1.5 to 2.2


2. Is A. High-speed CAN


3. Is B. Energy Storage device


4. Is C. Allow reverse current to flow


5. Is B. Transistor


7. Is C. Farad


11. Is D. 0 and 7V


12. Is C. Both A and B


13. Is A. The wire is connected between two grounds


14. Is D. A lower current circuit controls a higher current circuit


15 is B. Powertrain control module


The others I don't know good luck

Physics
Step-by-step answer
P Answered by PhD

B) As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.

Explanation:

As we know that electric motor is based on the concept of torque due to magnetic field on current carrying coil.

Here as the current is passing through the coil the torque on the coil is given as

\tau = NiAB sin\theta

so here the magnetic field due to coil will continuously repelling the current carrying coil as it will move between the magnetic field so direction of current in the coil will change continuously so that it will always repel by the magnetic field and continuously rotated between the magnets

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