How Does High-Frequency Ultrasound Affect Electromagnetic Fields?

In summary: Hz and is not typically used at frequencies as high as 1GHz or higher. It is more likely that the conversation is referring to high frequency AC electric current causing an oscillating magnetic field. However, this would still be limited by the self inductance of an electromagnet and may require additional components to mitigate this effect. In summary, high frequency ultrasound will not directly affect a magnetic field, but high frequency AC electric current can cause an oscillating magnetic field which may be limited by the self inductance of an electromagnet and may require additional components to mitigate this effect.
  • #1
RedPhase
3
0
What impact will a extremely high frequency of ultrasound have on a electromagnet?
Will the magnetic field also oscillate at that frequency?

What about a conductive wire transmitting electrical current? Will ultrasound on the wire cause the magnetic field to oscillate?
 
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  • #2
The ultrasonic wave is just a mechanical effect, so it won't affect a magnetic field directly.

But if the wire moves, it takes its magnetic field with it, so the magnetic field may move closer or further away from a given point, so it might change the observed magnetic field at that point.
 
  • #3
RedPhase said:
What impact will a extremely high frequency of ultrasound have on a electromagnet?
Will the magnetic field also oscillate at that frequency?

What about a conductive wire transmitting electrical current? Will ultrasound on the wire cause the magnetic field to oscillate?

By "ultrasound" do you mean Actual Sound or a high frequency AC Electric Current?
Sound will have no direct effect but high frequency (any frequency of) AC produces an oscillating field.* The problem will be that an electromagnet will have a high Self Inductance and that will limit the actual value of the current, which will severely limit the value of Magnetic field obtainable - unless you can tune out the inductance with an appropriate Capacitor. This is an added complication.
*The basis of a radio transmitting antenna.
 
  • #4
Yes.

Ultrasound in the 1GHz+ range(not RF) that vibrates the magnetic field of a transformer core.
 
  • #5
RedPhase said:
Yes.

Ultrasound in the 1GHz+ range(not RF) that vibrates the magnetic field of a transformer core.

are you really really sure ??

I haven't heard of ultrasound at anything over ~ 100kHz let alone 1MHz 100MHz or higher

what is supposed to be generating this ultrasound?

Dave
 

1. What is sound?

Sound is a form of energy made up of vibrations that travel through a medium, such as air or water, and can be detected by the human ear.

2. How are sound waves created?

Sound waves are created when an object vibrates, causing the surrounding air molecules to vibrate and create a chain reaction of vibrations that travel through the air.

3. What is a magnetic field?

A magnetic field is a force field created by moving electric charges, which can attract or repel other electric charges. It is represented by lines of force that form circles around a magnet or electric current.

4. How are magnetic fields related to sound?

Sound and magnetic fields are not directly related, but they can interact with each other. Magnetic fields can affect the movement of charged particles, which can impact the production and transmission of sound waves.

5. Can sound waves be affected by magnetic fields?

Yes, magnetic fields can affect sound waves. For example, in speakers, an electric current is used to create a magnetic field that interacts with a diaphragm to produce sound waves. Changes in the magnetic field can affect the movement of the diaphragm and therefore alter the sound produced.

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