It can be! Magnetic field strength is directly proportional to the square of the magnetic field amplitude in a given region. However, the strength of the applied field is not proportional to the square of this field strength. As the electromagnetic field increases in strength, the ratio of the electric field component to the magnetic field strength increases, which gives us a decrease in magnetic field strength. By using a very large electric field, we can amplify the electric current through the magnet (or other applied field) and use the resulting electric field to provide a powerful magnetic field.
We’ve covered the most important issues for electromagnetic field interactions, and what you need to understand, but where the problem is can be a hard one to put into practice. Most people are familiar with one of two opposing electromagnetic field interactions. A simple example would be a radio wave passing through a solid, and interacting with a metal (or other material) with an electrostatic repulsion between these components. A simpler example: in your car, you may hear a motor-driven car engine from behind you. When you turn on your car, a magnetic field is generated on the interior floor of your car. If you drive your car along a smooth surface, the field will deflect the motor-driven car in a predictable way and cause it to “hit the wall”, or “slide off”.
There is still a significant gap between the two extremes; you may be able to apply the same technique with electromagnetism. If you try, you may be surprised you are able to produce a strong electromagnetic field without actually driving a car. In fact, there are still many ways to do this with magnets and the techniques you learn here will work in almost all circumstances.
If you have tried this experiment, please leave a comment below! If you found this useful and if you’re ready to begin learning more about electromagnetic fields, or the principles behind it, please enter your email address as we’ll be providing access to a newsletter on my website in the future, and I look forward to hearing from you.
In a series of short videos produced in the mid-20th century, American artist Edvard Munch created a series of satirical illustrations. One of the more popular examples in Munch’s oeuvre deals with the absurdities and silliness of everyday domestic life. “Toys For Tots” depicts a family of seven children as they engage in an activity like playing with a doll’s arm, and a scene where a “Tots for Tots
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