What is the value of εr in a lossless dielectric with μr = 1?

In summary, electromagnetics is a branch of physics that studies the interactions between electrically charged particles and electromagnetic fields. The two main components of an electromagnetic field are the electric field and the magnetic field, which are perpendicular to each other. These fields are created by stationary and moving electric charges, respectively, and have different properties and effects. Electromagnetics is used in a variety of technologies and devices in everyday life, and solving problems in this field involves understanding its principles, using mathematical equations and models, and applying relevant laws and principles.
  • #1
formulajoe
177
0
H = 30 sin ( 2*pi*10^8*t - 5*x) in the z direction milli-amp/meter.
First question is if μr = 1, find εr.

H is the magnetic part of a plane wave in a lossless dielectric.
I don't see any way to find εr from the information that's been given.
 
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  • #2
What is the speed of the wave? How does the speed relate to the dielectric constant?
 
  • #3
just had a thought, if the square root of μr*εr = 5, than μr = 25 correct?
 
  • #4
I think you mean εr, and if μr is 1, then that is obviously true.
 
  • #5
i mean, that's the answer to the question right?
 

FAQ: What is the value of εr in a lossless dielectric with μr = 1?

What is the definition of electromagnetics?

Electromagnetics is a branch of physics that deals with the study of the interactions between electrically charged particles and the resulting electromagnetic fields.

What are the two main components of an electromagnetic field?

The two main components of an electromagnetic field are the electric field and the magnetic field. These fields are perpendicular to each other and are responsible for the propagation of electromagnetic waves.

What is the difference between electric and magnetic fields?

Electric fields are created by stationary electric charges, while magnetic fields are created by moving electric charges. Electric fields exert a force on other electrically charged particles, while magnetic fields can only exert a force on moving electrically charged particles.

How are electromagnetics used in everyday life?

Electromagnetics is used in a wide range of technologies and devices that we use in our daily lives. This includes electrical power generation, telecommunications, radio and television broadcasting, medical imaging, and many other applications.

How do you solve an electromagnetics problem?

Solving an electromagnetics problem involves understanding the principles of electromagnetics, using mathematical equations and models to analyze the problem, and applying relevant laws and principles to find a solution. It also requires knowledge of different types of electromagnetic fields, their properties, and their behavior in different materials.

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