Electric Field for the circular path of a positively charged particle

In summary, the conversation discussed the relationship between electric field lines and the movement of positively charged particles. The individual thought that the electric field lines would go from top to bottom if a positive charge was placed in the center, but the answer ended up being A. They also touched on how circular motion and centripetal force relate to electric fields and how the charged particle will eventually spiral down to the center of the orbit. The conversation also mentioned that the electric field lines show the direction of force, not velocity.
  • #1
Aaryan34532
10
1
Homework Statement
If a positively charged particle follows a circular path as shown below what will the electric field be out of the options below.
Relevant Equations
No equations. this is supposedly intuition.
Here is picture. Answers is A.
Screen Shot 2019-08-29 at 21.56.26.png
My attempt was that I thought if i were to place a positive test charge then it would go from top to bottom if there was a positive charge in the center it was avoiding and a positively charged particle at the top, but an electron at the bottom so it would avoid the positively charged particles and head for the electron thus the electric field would look like B and that's exactly how a positively charged particle would also do so.

But then the answer was A and i got thinking to how in circular motion there is centripetal force towards center, but honestly since this is electric fields i feel weird to correlate these and don't feel so correct.
 
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  • #2
A force that keeps an object on a circular path with constant speed is always directed towards the center of the circle, no matter whether it's gravitational or electromagnetic. In more advanced electromagnetic theory it will also be considered that the charged particle will radiate off energy and spiral down to the center of the orbit.
 
  • #3
hilbert2 said:
A force that keeps an object on a circular path with constant speed is always directed towards the center of the circle, no matter whether it's gravitational or electromagnetic. In more advanced electromagnetic theory it will also be considered that the charged particle will radiate off energy and spiral down to the center of the orbit.

how i visualize fields is with a positive test charge, so in this environment wherever the test charge goes is the electric field lines.. if the electric field lines show positive test charges going towards that one area where it looks like they're attracted to a negative then in reality won't the positively charged particle do the exact same thing? That is why I thought it was B because electric field lines and positively charged particle will act similarily.
 
  • #4
The field lines tell the direction of force, not the direction of velocity.
 

FAQ: Electric Field for the circular path of a positively charged particle

What is an electric field?

An electric field is a physical field that surrounds a charged particle or group of particles and exerts a force on other charged particles in the vicinity. It is a fundamental concept in electricity and plays a crucial role in many scientific applications.

How is the electric field calculated for a circular path of a positively charged particle?

The electric field for a circular path of a positively charged particle is calculated using the formula E = Q*r/(2*π*ε*r^2), where E is the electric field, Q is the charge of the particle, r is the radius of the circular path, and ε is the permittivity of the medium. This formula takes into account the force of the electric field on the particle at any given point along the circular path.

What factors affect the strength of the electric field for a circular path of a positively charged particle?

The strength of the electric field for a circular path of a positively charged particle is affected by several factors, including the magnitude of the particle's charge, the radius of the circular path, and the permittivity of the medium. Additionally, the presence of other charged particles or external electric fields can also influence the strength of the electric field.

How does the direction of the electric field change for a circular path of a positively charged particle?

The direction of the electric field for a circular path of a positively charged particle is always perpendicular to the path of the particle. This means that the electric field will constantly change direction as the particle moves along the circular path.

What are some real-world applications of understanding the electric field for a circular path of a positively charged particle?

Understanding the electric field for a circular path of a positively charged particle has many practical applications. For example, it is crucial in the design and operation of electronic devices such as computers and cell phones. It is also essential in fields like electromagnetism, where it is used to study the behavior of charged particles in magnetic fields. Additionally, understanding the electric field is critical in the development of technologies such as particle accelerators and medical imaging devices.

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