Undergrad Electret with circular electric field

Click For Summary
An electret can theoretically be designed to maintain a permanent circular electric field, potentially formed in a slab with the field looping within its plane. This would require rapid formation around a decreasing magnetic flux, presenting challenges in its implementation. The discussion raises the possibility of such electrets exhibiting magnetic-like behavior, potentially attracting or repelling objects. Additionally, the use of the piezoelectric effect is questioned, suggesting it may not be the preferred method for creating these circular electric fields. Overall, the feasibility of creating electrets with circular electric fields remains an intriguing topic for further exploration.
synch
Messages
84
Reaction score
11
[ Given that an "electret" can be made, that retains a persistent electric field, most often as a flat slab with a perpendicular field ]
Can an electret be made with a permanent circular electric field ? Eg in a slab with the field forming a loop in the plane of the slab ? It would have to be formed quickly around a decreasing magnetic flux as it decreased I guess, kind of difficult but not impossible .
Bonus question :) Would such electrets act as "magnets" ie attract and repel ?
 
Physics news on Phys.org
Why don’t you use Piezoelectric effect?
 

Thread 'Reference frames, center of rotation, etc'

Topic about reference frames, center of rotation, postion of origin etc Comoving ref. frame is frame that is attached to moving object, does that mean, in that frame translation and rotation of object is zero, because origin and axes(x,y,z) are fixed to object? Is it same if you place origin of frame at object center of mass or at object tail? What type of comoving frame exist? What is lab frame? If we talk about center of rotation do we always need to specified from what frame we observe?
View full post »

Similar threads

High School Understanding the electric field
  • · Replies 16 ·
Replies
16
Views
1K
Graduate Electric and magnetic field lines in a plane wave of finite extent
  • · Replies 1 ·
Replies
1
Views
1K
High School Circular motion as a result of the Lorentz force
  • · Replies 11 ·
Replies
11
Views
2K
Variation of electric field to produce electric current
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Visualizing fields around coils (statics and magnetostatics)
  • · Replies 5 ·
Replies
5
Views
1K
How does an eddy current brake work exactly?
  • · Replies 2 ·
Replies
2
Views
2K
Why is induced electric field circular?
  • · Replies 4 ·
Replies
4
Views
3K
Stupid question relating to electric induction
  • · Replies 74 ·
3
Replies
74
Views
14K
Calculating Induced EMF in a Circular Region with Decreasing Magnetic Field
  • · Replies 18 ·
Replies
18
Views
2K
Torque on a Circular Current Loop under a Misaligned Magnetic Field
  • · Replies 1 ·
Replies
1
Views
1K